Question

find the curved surface area of a cone if its slant height is 60cm and radius of its base is 21cm​

Answer 1

Step-by-step explanation:

Curved surface area = π × radius of base × slant height

C.S.A = π × r × l

$c.s.a = \frac{22 \times 60 \times 21}{7}$

$c.s.a. = 22 \times 60 \times 3$

$c.s.a = 3960 \: {cm}^{2}$