A cone of height 21 cm and radius of base
7 cm is made up of modelling clay. A child
reshapes it in the form of a sphere. Find the
diameter of the sphere.
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Step-by-step explanation:
volume of sphere = volume of the cone
4/3× pi×R^3 = 1/3× (pi) r^2 ×h
cancel pi and denominator 3 on both sides
4 R^3 = 7×7×21
R^3 = (49×21)/4
R = cube root (1029/4)
=6.3 cm
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