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A right angled triangle PQR where angle ...

A right angled triangle PQR where `angle Q=90^(@)` is rotated about QR and PQ. If QR=16 cm and PR=20 cm, compare the curved surface areas of the right circular cones so formed by the triangle.

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The correct Answer is:
754.28 cm
`C.S.A of a cone rotated about PQ > C.S.A of a cone rotated about QR`.
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