Answer:
1
Step-by-step explanation:
V= 1/3^r²h
V= (^r²h) ÷ 3
Cross multiply
3V = ^r²h
Divide both side by the coefficient of r²
3V ÷ (^h) = r²
Find the root of both side
r = square root of 3V ÷ (^h)
