Answer:

Step-by-step explanation:
Let
l------> the length of the base of the prism
w------> the width of the base of the prism
h------> the height of the prism
we know that
The volume of the prism is equal to

Solve for w
That means-------> isolate the variable w
so
Divide both sides by (lh)

Simplify

Answer: its correct
Step-by-step explanation: and its correct cuase its the answer you choose
C = 2pi*r
If we rearrange the terms to make r the subject,
We get r = C/2*pi
Hope it helps :)