Q4 of 48 Page 264

The spherical balloon with radius 21 cm is filled with air. Find the volume of air contained in it.

Given.


Radius of spherical balloon = 21 cm


Formula used/Theory.


Volume of Sphere = πr3


1cm3 = Litres


Volume of Balloon = πr3


= × 21 × 21 × 21


= 22 × 4 × 21 × 21


= 38808 cm3


1cm3 = Litres


38808 cm3 = 38808 × Litres


= 38.808 Litres


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