Question

the length of equator of the globe is 44cm .find its surface area

Answer 1

$2\pi \times r = 44$
$44 \div 7 \times r = 44$
$r = 44 \times 7 \div 44$
$r = 7cm$
$globe \: is \: a \: sphere$
$surface \: area = 4\pi \times {r}^{2}$
$88 \div 7( 7 \times 7)$
$88 \times 7$
$616 {cm}^{2}$