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Q.

The height of the cone is 24 cm and the diameter of its base is 14 cm, the curved surface area of the cone is

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a

528 cm 2  

b

550 cm 2  

c

616 cm 2  

d

704 cm 2   

answer is B.

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Detailed Solution

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Height of cone=h=24 cm Diameterd=14 cm  r=7 cm C.S.A. of cone=πrℓℓ=h2+r2 =227×7×25ℓ=(24)2+72=25 =550 cm2 

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