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How many balls of radius 2 cm can be made by melting a bigger ball of diameter 16 cm? (Take π = 22/7)1). 642). 1283). 324). 96

Answer»

Radius of SMALLER ball = 2 cm

Diameter of bigger ball = 16 cm

∴ The radius of the bigger ball = 8 cm

Volume of Sphere of bigger ball = (4/3)πr3, where r is the radius of bigger ball

Volume of sphere of smaller ball = (4/3)πr13 , where r1 is the radius of smaller ball

∴ The required NUMBER of smaller ball = 4/3πr3/4/3 πr13 = 83/23 = 512/8 = 64


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