Question

Geometry? Answer what you can

Answer 1

OK

Answer 2

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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)

504 cm3
1,512 cm3
1,620 cm3
2,592 cm3


18.radius of 70 m
(1 point)

4,900 pi m2
19,600 pi m2
9,800 pi m2
14,700 pi m2

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)

1,385 cm2
561 cm2
346 cm2
140 cm2


21.What is the volume of the sphere? Round the answer to the nearest cubic unit. R= 16 cm

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24.What is the scale factor of a cube with volume 1,331 ft.3 to a cube with volume 85,184 ft.3?


121:1,936
1:64
4:1
1:4

Answer 3

Do I post my answers? I got 1:4 I just need clarification

Answer 4

17 is 1,512 cm3

Answer 5

18 is 19,600 m2

Answer 6

Thank you!! :)

Answer 7

#19
sphere surface area =4*pi* r^2
circumference of 21
cir= 2* pi* r => r=21/(2*pi)
area= 4*pi (21/(2*pi))^2= 4 *pi *21^2/pi^2/4=21^2/pi

Answer 8

# 21
volume = 4/3*pi* r^3= 4/3*pi *(16)^3=

Answer 9

17157.284679

Answer 10

# 22
18--> 3
24---->4
so 18/3=6
24/4=6

Answer 11

so 1:6 ?

Answer 12

yes

Answer 13

# 23 do as 22

Answer 14

Also I didn't get 21, can you clarify? by the way thank you so much I appreciate this a lot! I've been stuck on this for a few hours and it's been annoying. I suck at geometry

Answer 15

21 asking about the voulem and the radius is given
the equation is =4/3 * pi * r^3

Answer 16

* Volume

Answer 17

thank you! and for 23 I got 1:2.4 Is that right?

Answer 18

you are right

Answer 19

# 24 ?

Answer 20

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Answer 21

WHEN U GUYS R DONE DO U MIND HELPING ME CHECK MY ANSWERS

Answer 22

it's 1 am for me and I'm trying to do my work, I'll try if simple.

Answer 23

IT IS grade seven work

Answer 24

# 24 85,184 /1331

Answer 25

Oh okay B, that makes sense

Answer 26

yes

Answer 27

I'm calculating 21 still and end up with B. Is that right? I ended up rounding.

Answer 28

i don't know what is B

Answer 29

nvm I got it, it was c. I see what I did wrong.

Answer 30

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