Problema Solution
The volume of a right circular cylinder is represented by V=πr^2h, where r is the radius of the base (in feet). What is the radius of a right circular cylinder when the volume is 144π cubic feet and the height is 9 feet?
Answer provided by our tutors
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
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the radius is 4 feet.