The lateral surface area of frustum of a...

The lateral surface area of frustum of a right circular cone, if the area of its base is `16pi" cm"^(2)` and the diameter of circular upper surface is 4 cm and slant height 6 cm, will be

`30pi "cm"^(2)`

`48pi "cm"^(2)`

`36pi "cm"^(2)`

`60pi "cm"^(2)`

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The lateral surface area of frustum of a right circular cone, if the area of its base is 16 pi cm^2 and the diameter of circular upper surface is 4cm and stant height 6 cm, will be किसी लम्ब वृत्ताकार शंकु के छिननक के पार्श्व सतह का क्षेत्रफल क्या होगा, जिसके आधार का क्षेत्रफल 16 pi से.मी.^2 है, वृत्ताकार उपरी सतह का व्यास 4 से.मी. है और तिरछी ऊँचाई 6 से.मी. है?

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