Q11 of 26 Page 183

Two hollow spheres with the lengths of diameter 21 cm and 71.5 cm respectively are made from the sheets of the same metal. Let us calculate the volumes of sheets of metal required to make the two spheres

Diameter of first sphere = 21 cm


Diameter of second sphere = 71.5cm


Radius of first sphere =


Radius of second sphere =


Volume of sheets of metal required to make sphere = Volume of sphere


Volume of Sphere=


Volume of first sphere =


Volume of first sphere = 14539.77 cm3


Volume of second sphere=


Volume of Second Sphere = 573875.624 cm3


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