Question

6. A balloon has a circumference of 16 cm. Use the circumference to approximate the surface area of the balloon to the nearest square centimeter. (1 point)
804 cm2
326 cm2
256 cm2
81 cm2
7. Find the volume of the sphere shown. Give each answer rounded to the nearest cubic unit.

(1 point)
2,094 mm3
419 mm3
4,189 mm3
1,257 mm3
For questions 8–9, determine whether the two figures are similar. If so, give the similarity ratio of the smaller figure to the larger figure.
8.
(1 point)
yes; 1 : 3
yes; 1 : 2
yes; 1 : 5
no

Answer 1

9.
(1 point)
yes; 1 : 1.6
yes; 1 : 1.4
yes; 1 : 2.6
no
10. Find the similarity ratio of a prism with the surface area of 81 m2 to a similar prism with the surface area of 361 m2. (1 point)
6,859 : 729
9 : 19
19 : 9
729 : 6,859