(A) (M.C.)
If the slant height of a night circular cone is 15cm. and the length of the base diameter
is 16 cm., then the lateral surface area of the cone is
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Height = 15CM
Diameter = 16CM = 16/2 = 8Cm
Radius = 8CM
Lateral Surface Area = ?
We know That
Lateral Surface Area = Pi × r √H² + R²
= 22/7×8√(15)²+(8)²
= 176/7√ 225 + 64
= 176/7 √ 289
= 176/7×17
= 2992/7
= 176CM2 Ans
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