a right circular cone of height 8.4 and the radius of its base is 2.1cm. it is melted at recast into spehre. find the radius of sphere
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r=2.1cm
h=8.4cm
So,
Volume of cone= volume of sphere
1/3*22/7*2.1^2*8.4= 4/3*22/7*r^3
2.1^2*8.4=4*r^3
2.1^2*8.4/4=r^3
2.1^3=r^3
r=2.1cm
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