The curved surface area of a right circular cone of radius 28 cm is 4664 cm2. What is the slant height of the cone? (Use π = 22/7)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 53 cm
Given:
Radius = 28 cm
CSA = 4664 cm2
Formula used:
Curved surface area of cone = πrl
Where, r = radius and l = slant height
Calculations:
Using the formula given:
⇒ Curved surface area = (22/7) × 28 × l
⇒ 4664 = 88 × l
⇒ l = 53 cm