A cone has a slant height of 9 cm and a base radius of 7 cm. Find (i) its curved surface area (ii) total surface area.
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curved surface area = πrl
3.14×7×9 = 197.82 cm^2
Total surface area of cone = πr (r+l)
3.14×7 (7+9)
21.98×16 = 351.68 cm^2
3.14×7×9 = 197.82 cm^2
Total surface area of cone = πr (r+l)
3.14×7 (7+9)
21.98×16 = 351.68 cm^2
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