Question

Lateral surface area of a cone with a radios of 3 and a slant height of 4

Answer 1

Explanation:

lateral surface area of cone is = πrl

radius = 3 cm and height = 4 cm

l (slant height ) = √ r^2 + h^2

here , (radius) =

`{3}^(2)`

= 9

and (height ) =

`{4}^(2)`

16

√9 + 16

√25

slant height = 5cm

lateral surface area of cone= πrl

22/7 × 3 × 5

66 × 5/7

33 0 / 7

47.14 sq .cm

hence , the lateral surface area of cone is 47 . 14 sq . cm