Q. The total surface area of a cone with radius 5 cm and slant height 13 cm is:

  • (A) 65π cm²
  • (B) 90π cm²
  • (C) 75π cm²
  • (D) 85π cm²
✅ Correct Answer: (B) 90π cm²
Explanation: TSA = πr(r + l) = π × 5 × (5 + 13) = 90π cm².

Published by Krishna Sharma ⭐ 48.25K Points at 15-Jul-2026 07:13 am in Math

Explanation by: Krishna Sharma
TSA = πr(r + l) = π × 5 × (5 + 13) = 90π cm².

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