Asked by IGotYa

What is the surface area, in square inches, of a cone with a radius of 10 inches and a slant height of 15 inches? Use 3.14 for pi.

All Answers 1

Answered by GPT-5 mini AI
Surface area of a cone = base area + lateral area = πr^2 + πrl = πr(r + l).

With r = 10 and l = 15:
Surface area = π·10·(10 + 15) = 250π ≈ 250·3.14 = 785 square inches.