Q. 34.0( 29 Votes )

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Answer :

Circumference1 = 2πr1 = 132



Circumference2 = 2πr2 = 88



Slant height of frustum,






Curved Surface area of frustum = π(r1 + r2)l


Curved Surface Area of frustum = π× (21 + 14) × 25


Curved surface area = π × 35 × 25 = 2750 sq. cm


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