Multiple choice

The curved surface area and the volume of a cylindrical pole are 132 m2 and 528 m3, respectively. What is the radius (in m) of the pole?

  1. 8 m

  2. 12 m

  3. 24 m

  4. 32 m
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

For a cylinder: CSA = 2πrh = 132, Volume = πr^2h = 528. Divide Volume by CSA: (πr^2h)/(2πrh) = r/2 = 528/132 = 4, so r = 8 m. This elegant solution avoids solving for h. Options B, C, D are arithmetic errors or misapplications of formulas.

Keep practicing — related questions