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[" per "cm^(2)" and black paint costs "5" paise per "cm^(2)" ."],[" 3.The diameter of a sphere is decreased by "25%." By what per cent does its curv "],[" surface area decrease? "]

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The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease ?

The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease?

The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease?

The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease?

The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease ?

If diameter of a sphere is decreased by 25% then what percent does its curved surface area decrease ?

The diameter of a sphere is decreased by 25%. By what percent its curved surface area decrease?

If radius of a sphere is decreased by 24%, by what per cent does its surface area decrease?

If the diameter of sphere is decreased by 25%, then by what percent the curved surface area will be decreased?