Question

Suppose the volume of a cylinder is 1357.17ft³ and the height is twice the radius. What is the radius of the cylinder? Determine the radius, rounded to the nearest whole foot. a) 11 feet b) 13 feet c) 15 feet d) 17 feet

Answer 1

πr²(2r) = 1,357.17

πr³ = 1,357.17

r³ = 1,357.17/π = 432

r = about 7.6 feet

h = 2r = about 15 feet

The correct answer is C.