OpenStudy (anonymous):

does anyone have the lesson 9 unit 5 surface area and volume unit test for geometry b? I will give medals

OpenStudy (shreehari499):

PLease post this in the maths section..someone will surely help you..:)

OpenStudy (anonymous):

1.c 2.a 3.d 4.b 5.b 6.d 7.b 8.c 9.c 10.D 11d 12.d 13.c 14.d 15.b 16.b 17.d 18.b 19.c 20.a 21.c 22.b 23.c 24.b 25.d 26.b 27.b 28.c 29.d 30.d

OpenStudy (anonymous):

Are those answers legit?

OpenStudy (anonymous):

Yesthey are i promise BIO B 9th grade CA

OpenStudy (anonymous):

Did anyone find out if those answers were correct? I don't want to bomb this test....

OpenStudy (anonymous):

1. What is the area of the trapezoid? The diagram is not drawn to scale. An isosceles trapezoid segmented into a rectangle with two right triangles on either end. The top base of the trapezoid measures 7 cm, and the length of the base of one of the triangles measures 5 cm. The height of the trapezoid is 5 cm. (1 point) Unselected answer (1 pt) 60 cm² Unselected answer (0 pts) 85 cm² Unselected answer (0 pts) 12 cm² Incorrect Answer (0 pts) 30 cm² 0 /1 point 2. Given the regular polygon, find the measure of each numbered angle. polygon (1 point) Unselected answer (0 pts) m∡1 = 45°; m∡2 = 135° Correct answer (1 pt) m∡1 = 45°; m∡2 = 67.5° Unselected answer (0 pts) m∡1 = m∡2 = 60° Unselected answer (0 pts) m∡1 = 22.5°; m∡2 = 78.75° 1 /1 point 3. The figures below are similar. figures What are a) the ratio of the perimeters and b) the ratio of the areas of the larger figure to the smaller figure? The figures are not drawn to scale. (1 point) Unselected answer (0 pts) A Unselected answer (1 pt) B Incorrect Answer (0 pts) C Unselected answer (0 pts) D 0 /1 point 4. The area of a regular hexagon is 38 cm2. What is the area of a regular hexagon with sides four times as long? (1 point) Unselected answer (0 pts) 152 cm2 Unselected answer (0 pts) 228 cm2 Unselected answer (0 pts) 304 cm2 Correct answer (1 pt) 608 cm2 1 /1 point 5. What is the area of a regular octagon with a side of 8 in.? Round the answer to the nearest tenth. (1 point) Unselected answer (0 pts) 443.4 in.2 Unselected answer (0 pts) 618.0 in.2 Unselected answer (0 pts) 221.7 in.2 Correct answer (1 pt) 309.0 in.2 1 /1 point 6. Name the minor arc and find its measure. a circle (1 point) Correct answer (1 pt) AB; 162° Unselected answer (0 pts) ADB; 162° Unselected answer (0 pts) AB; 198° Unselected answer (0 pts) ADB; 198° 1 /1 point 7. What is the circumference of the given circle in terms of pi symbol. circle (1 point) Unselected answer (0 pts) 12pi symbol in. Unselected answer (0 pts) 36pi symbol in. Correct answer (1 pt) 24pi symbol in. Unselected answer (0 pts) 144pi symbol in. 1 /1 point 8. What is the area of the given circle in terms of pi_symbol? circle (1 point) Unselected answer (0 pts) 92.16pi_symbol m2 Unselected answer (0 pts) 72.38pi_symbol m2 Unselected answer (0 pts) 46.08pi_symbol m2 Correct answer (1 pt) 23.04pi_symbol m2 1 /1 point 9. What is the area of a sector with a central angle of 210° and a diameter of 4.6 m? Round the answer to the nearest tenth. (1 point) Unselected answer (0 pts) 4.2 m2 Unselected answer (1 pt) 9.7 m2 Unselected answer (0 pts) 14.5 m2 Incorrect Answer (0 pts) 38.8 m2 0 /1 point 10. What is the area of the shaded region in the given circle in terms of pi_symbol and in simplest form? circle (1 point) Unselected answer (1 pt) (30pi_symbol + 9Square root 3) m2 Unselected answer (0 pts) (24pi_symbol + 9Square root 3) m2 Incorrect Answer (0 pts) (30pi_symbol + 18Square root 3) m2 Unselected answer (0 pts) (24pi_symbol + 18Square root 3) m2 0 /1 point

OpenStudy (anonymous):

1. Use Euler’s formula to find the missing number. Vertices: 13 Edges: 26 Faces: ? (1 point) Unselected answer (0 pts) 14 Correct answer (1 pt) 15 Unselected answer (0 pts) 16 Unselected answer (0 pts) 17 1 /1 point 2. Describe the cross section. (1 point) Unselected answer (0 pts) pentagon Correct answer (1 pt) trapezoid Unselected answer (0 pts) hexagon Unselected answer (0 pts) cube 1 /1 point 3. A department store sells small boxes in which customers can store potpourri. The diagram below shows one of the boxes. The diagram is not drawn to scale. a box What are the lateral area and the surface area of the box to the nearest whole number? Use the large 17 cm × 5 cm rectangles on the top and bottom as the bases. (1 point) Unselected answer (0 pts) 69 cm2; 307 cm2 Unselected answer (0 pts) 69 cm2; 392 cm2 Correct answer (1 pt) 137 cm2; 307 cm2 Unselected answer (0 pts) 137 cm2; 392 cm2 1 /1 point 4. Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. The figure is not drawn to scale. a prism (1 point) Unselected answer (0 pts) 795 m2; 809 m2 Unselected answer (0 pts) 758 m2; 849 m2 Correct answer (1 pt) 795 m2; 822 m2 Unselected answer (0 pts) 758 m2; 822 m2 1 /1 point 5. Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to scale. a cylinder (1 point) Correct answer (1 pt) 1,659 in.2 Unselected answer (0 pts) 898 in.2 Unselected answer (0 pts) 5,862 in.2 Unselected answer (0 pts) 2,959 in.2 1 /1 point 6. Find the surface area of the regular pyramid shown to the nearest whole number. The figure is not drawn to scale. AA regular hexagonal pyramid is shown. The slant height is 9 meters, the length of one side of the base is 13 meters, and the apothem of the base is 6.5 square root 3 meters. (1 point) Unselected answer (0 pts) 351 m2 Incorrect Answer (0 pts) 415 m2 Unselected answer (0 pts) 542 m2 Unselected answer (1 pt) 790 m2 0 /1 point 7. What is the surface area of a conical grain storage tank that has a height of 24 meters and a diameter of 16 meters? Round the answer to the nearest square meter. (1 point) Correct answer (1 pt) 837 square meters Unselected answer (0 pts) 848 square meters Unselected answer (0 pts) 1,991 square meters Unselected answer (0 pts) 1,923 square meters 1 /1 point 8. The lateral area of a cone is 555cm2. The radius is 15 cm. What is the slant height to the nearest tenth of a centimeter? (1 point) Correct answer (1 pt) 37.0 cm2 Unselected answer (0 pts) 21.7 cm Unselected answer (0 pts) 22.2 cm Unselected answer (0 pts) 7.7 cm 1 /1 point 9. What are the lateral area and the surface area of the cone shown below? Round the answers to the nearest tenth. The figure is not drawn to scale. a cone (1 point) Unselected answer (0 pts) LA = 452.4 ft2; SA = 2,598.8 ft2 Incorrect Answer (0 pts) LA = 452.4 ft2; SA = 1,244.1 ft2 Unselected answer (0 pts) LA = 791.7 ft2; SA = 2,598.8 ft2 Unselected answer (1 pt) LA = 791.7 ft2; SA = 1,244.1 ft2 0 /1 point 10. What is the volume of the given prism? Round the answer to the nearest tenth of a centimeter. The figure is not drawn to scale. a prism (1 point) Unselected answer (0 pts) 313.3 cm3 Unselected answer (0 pts) 436.4 cm3 Correct answer (1 pt) 541.8 cm3 Unselected answer (0 pts) 681.5 cm3 1 /1 point For questions 11 and 12, find the volume of the cylinder in terms of . 11. a cylinder (1 point) Correct answer (1 pt) 43.35 m3 Unselected answer (0 pts) 51 m3 Unselected answer (0 pts) 56.78 m3 Unselected answer (0 pts) 73.695 m3 1 /1 point Find the volume of the cylinder in terms of pi. The diagrams are not drawn to scale. 12. mc015-1.jpg h = 6 in. and r = 3 in. (1 point) Unselected answer (0 pts) 27mc015-2.jpg in.3 Unselected answer (0 pts) 108mc015-4.jpg in.3 Correct answer (1 pt) 54mc015-6.jpg in.3 Unselected answer (0 pts) 324mc015-8.jpg in.3 1 /1 point 13. What is the height of the cylinder? The figure is not drawn to scale. mc016-1.jpg (1 point) Correct answer (1 pt) 2.4 in. Unselected answer (0 pts) 7.2 in. Unselected answer (0 pts) 14.4 in. Unselected answer (0 pts) 4.8 in. 1 /1 point 14. What is the volume of the composite space figure to the nearest whole number? The figure is not drawn to scale. a composite space figure (1 point) Unselected answer (0 pts) 40 cm3 Incorrect Answer (0 pts) 84 cm3 Unselected answer (1 pt) 124 cm3 Unselected answer (0 pts) 148 cm3 0 /1 point For questions 15 and 16, find the volume of the square pyramid shown. Round to the nearest whole number. 15. a pyramid (1 point) Unselected answer (0 pts) 588 cm3 Correct answer (1 pt) 392 cm3 Unselected answer (0 pts) 168 cm3 Unselected answer (0 pts) 28 cm3 1 /1 point Find the volume of the square pyramid shown. Round to the nearest whole number. The diagrams are not drawn to scale. 16. a pyramid (1 point) Unselected answer (0 pts) 9,216 ft3 Unselected answer (0 pts) 192 ft3 Unselected answer (1 pt) 3,072 ft3 Incorrect Answer (0 pts) 4,608 ft3 0 /1 point 17. A rectangular pyramid fits exactly on top of a rectangular prism. The prism has a length of 18 cm, a width of 6 cm, and a height of 9 cm. The pyramid has a height of 15 cm. Find the volume of the composite space figure. (1 point) Unselected answer (0 pts) 504 cm3 Correct answer (1 pt) 1,512 cm3 Unselected answer (0 pts) 1,620 cm3 Unselected answer (0 pts) 2,592 cm3 1 /1 point Find the surface area of the sphere with the given dimension. Leave your answer in terms of . 18. radius of 70 m (1 point) Unselected answer (0 pts) 4,900 m2 Correct answer (1 pt) 19,600 m2 Unselected answer (0 pts) 9,800 m2 Unselected answer (0 pts) 14,700 m2 1 /1 point 19. A spherical balloon has a circumference of 21 cm. What is the approximate surface area of the balloon to the nearest square centimeter? (1 point) Unselected answer (0 pts) 1,385 cm2 Unselected answer (0 pts) 561 cm2 Unselected answer (0 pts) 346 cm2 Correct answer (1 pt) 140 cm2 1 /1 point 20. What is the volume of the sphere? Round the answer to the nearest cubic unit. (1 point) Correct answer (1 pt) 3,054 cm3 Unselected answer (0 pts) 339 cm3 Unselected answer (0 pts) 763 cm3 Unselected answer (0 pts) 9,160 cm3 1 /1 point 21. The volume of a sphere is 5,000 m3. What is the surface area of the sphere to the nearest square meter? (1 point) Unselected answer (0 pts) 4,451 m2 Correct answer (1 pt) 3,033 m2 Unselected answer (0 pts) 1,516 m2 Unselected answer (0 pts) 888 m2 1 /1 point For questions 22 and 23, determine whether the two figures are similar. If so, give the scale factor of the smaller figure to the larger figure. 22. two figures (1 point) Unselected answer (0 pts) yes; 1:4 Correct answer (1 pt) yes; 1:6 Unselected answer (0 pts) yes; 1:8 Unselected answer (0 pts) no 1 /1 point Determine whether the two figures are similar. If so, give the similarity ratio of the smaller figure to the larger figure. The figures are not drawn to scale. 23. two figures (1 point) Unselected answer (0 pts) yes; 1:2.4 Correct answer (1 pt) yes; 1:1.4 Unselected answer (0 pts) yes; 1:1.2 Unselected answer (0 pts) no 1 /1 point 24. What is the scale factor of a cube with volume 729 ft.3 to a cube with volume 19,683 ft.3? (1 point) Unselected answer (1 pt) 1:3 Unselected answer (0 pts) 3:1 Unselected answer (0 pts) 81:729 Incorrect Answer (0 pts) 1:27 0 /1 point 25. If the scale factor of two similar solids is 4:17, what is the ratio of their corresponding areas and volumes? (1 point) Unselected answer (0 pts) 4:289 and 17:4,913 Unselected answer (0 pts) 8:34 and 12:51 Correct answer (1 pt) 16:289 and 64:4,913 Unselected answer (0 pts) 64:4,913 and 16:289 1 /1 point 26. The volumes of two similar solids are 1,331 m3 and 216 m3. The surface area of the larger solid is 484 m2. What is the surface area of the smaller solid? (1 point) Unselected answer (0 pts) 864 m2 Unselected answer (0 pts) 288 m2 Correct answer (1 pt) 144 m2 Unselected answer (0 pts) 68 m2 1 /1 point 27. What is the lateral area of the cone to the nearest whole number? The figure is not drawn to scale. (1 point) Unselected answer (0 pts) 15,080 m2 Correct answer (1 pt) 25,133 m2 Unselected answer (0 pts) 45,239 m2 Unselected answer (0 pts) 50,265 m2 1 /1 point 28. Concrete can be purchased by the cubic yard. How much will it cost to pour a slab 12 feet by 12 feet by 9 inches for a patio if the concrete costs $54.00 per cubic yard? (1 point) Unselected answer (0 pts) $1,944.00 Unselected answer (0 pts) $972.00 Unselected answer (0 pts) $552.00 Correct answer (1 pt) $216.00 1 /1 point 29. Two square pyramids have the same volume. For the first pyramid, the side length of the base is 16 in., and the height is 28 in. The second pyramid has a height of 112 in. What is the side length of the base of the second pyramid? (1 point) Unselected answer (0 pts) 7 in. Correct answer (1 pt) 8 in. Unselected answer (0 pts) 28 in. Unselected answer (0 pts) 56 in. 1 /1 point 30. What is the volume of a square pyramid with base edges of 32 cm and a slant height of 34 cm? (1 point) Unselected answer (0 pts) 30,720 cm3 Unselected answer (0 pts) 15,360 cm3 Unselected answer (0 pts) 11,605 cm3 Correct answer (1 pt) 10,240 cm3 1 /1 point