A right circular cone has a base circumference of 44 cm and a slant height of 14 cm. Find its curved surface area.
Show answer & explanation
Correct answer: C
Explanation
Given:
Base circumference = 44 cm
Slant height = 14 cm
By formula:
Curved surface area = πrl
Perimeter = 2πr
2πr = 44
2 × 22/7 × r = 44
44/7 × r = 44
r = 7 cm
Curved surface area = πrl
= 22/7 × 7 × 14 = 308 cm²