Question

If you help me, I shall be your friend! :)

PLEASE HELP ME!!!
For each equation below, decide what value, if any, would make it true.

( Please no links, and don't answer unless you're actually going to help me)

Answer 1

h = 81

r = N/A

a = 36\pi ^2\\

b = N/A

Explanation:

Answer 2

h=9

r=3

and im not so sure about the other 2