Question

Find the volume of the pyramid.

Answer 1

@ganeshie8

Answer 2

Notice that the base polygon here is a triangle. Also it is a right triangle because 5^2 + 12^2 = 13^2.

base = 5
height = 12

Can you find the area of the base triangle ?

Answer 3

30

Answer 4

That's the area of the base polygon

Answer 5

Multiply that by the height of the pyramid 9
then divide by 3

Answer 6

90?

Answer 7

Yep, we have used the same formula :

Volume = (Base area) * (height) / 3

Answer 8

okay so is 90 the answer

Answer 9

Yes

Answer 10

thank you i just need a quick answer

Answer 11

If you reduced the height of that pyramid, would the volume increase or decrease ?

Answer 12

decrease

Answer 13

Yeah it definitely decreases :

Volume is proportional to height

Answer 14

Changing from 15 to 5 is a reduction by a factor of 1/3 right ?

Answer 15

yes

Answer 16

so the volume gets multiplied by the same 1/3

Answer 17

alright thank you<3

Answer 18

Np :)