The curved surface area of a cone is 60π square centimeters, and its slant height is 10 centimeters. Find its height.
Show answer & explanation
Correct answer: C
Explanation
CSA = 60π cm²
l = 10 cm
CSA = πrl
h = √(l² − r²)
πr × 10 = 60π
⇒ r = 6
h = √(10² − 6²)
= √(100 − 36)
= √64
= 8 cm