how many balls of radius 1.4 cm can be produced by melting a metallic sphere of radius 42 cm
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Step-by-step explanation:
r1 = 1.5cm,r2=42cm
no of balls = volume of small sphere÷volume of big sphere
= 4/3πr^3÷4/3πr^3
=r^3÷r^2
= (1.4)^3÷(42)^3
=115
actually answer is in decimal 115 is approximately
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