The radius of a cone is 5 cm and its slant height is 16 cm. It's total surface area (in cm2) will be:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 330
Radius of the cone = 5 cm
Slant height of the cone = 16 cm
Total surface area of a cone = πr(l + r) = π(5)(16 + 5) = 105π = 105(22/7) = 330cm2