Area of the bowl 9- The radius of a sphere is decreased by - 20 - - - By what per cent its curved surface area decreases- 10- The radius of three among the four spheres are - 33 mathrm - cm - - 44 mathrm - cm - - and - 48 mathrm - cm - - respectively- If-

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area of the bowl 9. The radius of a sphere is decreased by \( 20 \% . \) By what per cent its curved surface area decreases? 10. The radius of three among the four spheres are \( 33 \mathrm { cm } , 44 \mathrm { cm } \) and \( 48 \mathrm { cm } \) respectively. If.