Question

the radius of a metallic sphere is 9cm it is melted and drawn into wire of uniform circular cross section the length of the wire is 240m find the radius

Answer 1

9÷2 (5^1/2) answer

$4 \div 3\pi \: {r}^{3} = \pi {r}^{2}h$
$4 \div 3\pi {r}^{3} = {r}^{2} h$