Question

A copper sphere of diameter 18cm is drawn into a wire of diameter 4 mm find the length of the wire. Select one:

Answer 1

║⊕ANSWER⊕║

Volume of sphere =$4 * \frac{22}{7}  * 9 * 9 * 9 cm^{3}  = 972 * \frac{22}{7}  cm^{3}$

Volume of sphere =$\frac{22}{7}  * 0.2 * 0.2 * h cm^{3}$

$972 * \frac{22}{7}  = \frac{22}{7} * \frac{2}{10} * \frac{2}{10} * h$

h = 243m