Question

Find surface Area & Volume of the regular pentagonal pyramid
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Answer 1

First find the area of the base. The formula is 1/2(perimeter)(apothem)

Answer 2

Find that and tell me what you get.

Answer 3

177.975

Answer 4

Yes. That's what I got.

Answer 5

Not we have to find the area of one of those triangles and multiply by 5. I'll draw a picture. We know the base is 10.17 and the slant height is the height of the triangle.

Answer 6

Find the area of that triangle and multiply it by 5

Answer 7

127.125

Answer 8

Is that one triangle or all 5?

Answer 9

one

Answer 10

5 would be 635.625

Answer 11

Now add the area of the base that we calculated earlier. That should be the total surface area.

Answer 12

SA = 762.75 ?

Answer 13

What is the area of the base?

Answer 14

50.85

Answer 15

i mean 635.625

Answer 16

What is the area of the 5 triangles?

Answer 17

635.625

Answer 18

First find the area of the base. The formula is 1/2(perimeter)(apothem)12 minutes ago
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Mertsj






0Find that and tell me what you get.11 minutes ago
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richardlong369

Best Answer




0177.975

Answer 19

If you look back through the posts you will find the area of the base and the area of the 5 triangles. Add them together to get the total area.

Answer 20

813.6

Answer 21

yes. That is the surface area.

Answer 22

Now the volume. Fortunately we are partly done with the volume because we already know the area of the base.

Answer 23

So find that number. The area of the base.

To find the volume multiply these 3 numbers: 1/3, the area of the base, and the height of the pyramid which is shown in the picture to be what?

Answer 24

i got 13361.486

Answer 25

What is the height?

Answer 26

25

Answer 27

That's the slant height. Look at the picture.

Answer 28

24

Answer 29

its 24

Answer 30

The slant height is the height of the triangles that make the pyramid.

Answer 31

Yes. 1/3(24)=8 so multiply 8 times the area of the base. What do you get?

Answer 32

1423.8

Answer 33

That's what I got as well. That would be m^3

Answer 34

thankyou

Answer 35

yw