The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.
examcare Answered question February 13, 2025
Curved Surface Area (CSA) formula:
CSA=πrl\text{CSA} = \pi r lCSA=πrl
Find r using Pythagoras:
r=102−82=36=6r = \sqrt{10^2 – 8^2} = \sqrt{36} = 6r=102−82=36=6
Calculate CSA:
CSA=π×6×10=60π≈188.5 m2\text{CSA} = \pi \times 6 \times 10 = 60\pi \approx 188.5 \text{ m}^2CSA=π×6×10=60π≈188.5 m2
Final Answer: 60π60\pi60π m² or 188.5 m² ✅
examcare Answered question February 13, 2025
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