Answer:
Explanation:
V=πr^2h
r = ?
V = 144π ft^3
h = 9 ft
π(r^2)*9 = 144π divide both sides by π
(r^2)*9 = 144
by solving we find and consider the positive root (the radius can not be a negative number)
r = 4 ft
The radius is 4 feet.
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