A cylinder tank is 785 cubic feet. The height is 10 ft use the formula v=pi.r2.h to find the radius.

Question

Sqaure roots is involved with this problem

Answer 1

QUESTION: A cylinder tank is 785 cubic feet. The height is 10 ft use the formula v=pi.r2.h to find the radius.

V=pi.r^2.h

785 = pi.r^2.10  -- divide both sides by 10

pi.r^2 = 78.5      -- divide both sides by pi 

r^2 = 78.5/pi = 24.9873   -- now take the square root of both sides

r = 4.9987 ft

or, radius = 5 ft (approx)

Answer 2

Volume = 4,000 cubic meters

Heigth = 13.29 meters