Question

I have no idea how to solve it

Answer 1

Ok.

They found volume by doing pi r^2 times height.

So to find r^2 we re arrange the formula into:

r = √1,780.38 / πh

Solve:

927.44

Double check:

πr^2 h = 1,780.38

3.14 x 927.44^2 x 7 = 1,780.38