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A solid metal sphere is melted and small...

A solid metal sphere is melted and smaller sperees of equal radii are formed. 10% of the volume of the sphere is lost in the process. The smaller spheres have a radius , that is `(1)/(9)` th the larger sphere . Iof 10 litres of paint were needed to paint the larger sphere. Find how many letres are needed to paint all the smaller spheres?

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The correct Answer is:
81 litres.
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NAGEEN PRAKASHAN ENGLISH-VOLUME AND SURFACE AREA OF SOLIDS-Exercise
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