Question

The edges of two similar pyramids have a scale factor of 2 : 5. If the volume of the smaller pyramid is 16, what is the volume of the larger pyramid?
a.67.5
b.250
c.125
d.500

Answer 1

hint: the ratio of area between the pyramids is (2:5)^2~right?

Answer 2

im honestly not sure

Answer 3

the scale factor is the ratio of their lengths, so square that and you'll get the ratio of their areas. Cube it and you'll get the ratio of volumes.

Answer 4

so i square root 2:5^2

Answer 5

i got 2:25