Question

If the radius of a cone is 60cm and its curved surface area is 23.55 $m^2$ then find its slant height.$(\pi =3.14)$

Answer 1

$r=60$cm CSA$=23.55m^2$

CSA$=\pi rl$

$23.55=3.14\times \frac{60}{100}\times l$

$l=\frac{23.55\times 100}{3.14\times 60}$

$l=12.5$m.