The volume of a cylinder of radius r is 1/4 of the volume of a rectangular box with a square base of side length x. If the cylinder and the box have equal heights, what is r in terms of x?
Given
Radius of cylinder = r
Side length of square base =x
Height of rectangular box = height of cylinder
= πr2h = 
= r2 = 
= r = 
= r = 
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