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The C.S.A of a cone whose d = 7 cm, l = 4 cm A) 34 cm2 B) 24 cm2C) 54 cm2 D) 44 cm2 |
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Answer» Correct option is (D) 44 cm2 \(r=\frac d2=\frac72\,cm\) and \(l\) = 4 cm \(\therefore\) Curved surface area of cone \(=\pi rl\) \(=\frac{22}7\times\frac72\times4=11\times4\) \(=44\,cm^2\) Correct option is D) 44 cm2 |
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