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What is the area of the curved surface of a right circular cone with height 8 m and slant height 10 m ? |
60 m2 60π m2 40 m2 40π m2 |
60π m2 |
We know that, CSA = πrl l2 = h2 + r2 l = 10 cm h = 8 cm According to the question, = r2 + 82 = 102 = r2 = 100 – 64 = 36 = r = 6 CSA = πrl = π × 6 × 10 = 60π m2 |
