A cone has a slant height of 13 cm and a vertical height of 5 cm. What is the radius of the base?
Show answer & explanation
Correct answer: A
Explanation
Given:
l = 13 cm, h = 5 cm
l² = r² + h²
13² = r² + 5²
169 = r² + 25
r² = 169 - 25 = 144
r = √144 = 12 cm