Question

The circumference of a base of a cone is 44cm and its slant height is 10 cm. Then, find curved surface area of ​

Answer 1

$\huge\bold{Question}$

The circumference of a base of a cone is 44cm and its slant height is 10 cm. Then, find curved surface area of

$\huge\bold{Given}$

$\sf\fbox{Circumference of the base}$

2 \pi r = 442πr=44

\pi r = 22πr=22

r = 22 * 7/22r=22∗7/22

'22' get cancelled out,

r = 7cmr=7cm

C.S.A of a right circular cone,

= \pi * r* l=π∗r∗l

= 22/7 * 7 * 10=22/7∗7∗10

'7' is cancelled out,

$\sf\color{red}{So}$

= 220 cm^2=220cm

2

Answer 2

The circumference of a base of a cone is 44cm and its slant height is 10 cm. Then, find curved surface area of ​