Question

HELPPPPP!! The formula gives the volume V of a right cylinder with radius r and height h.

V=πr²h Solve for r.

Explain your answer. Should either answer be discarded? Why or why not?

Answer 1

see explanation

Explanation:

Isolate r² by dividing both sides by πh

r² =
`(V)/(h\pi )`

Take the square root of both sides

r = ±
`\sqrt{(V)/(h\pi ) }`

The negative part can be discarded as r > 0, hence

r =
`\sqrt{(V)/(h\pi ) }`