Question

20 m
12 m
34 m

Find the surface area of this figure

Answer 1

Surface area of the fig is 2350.9 sq m (approx).

Explanation:

Given,

Diameter = 34 m

so, radius (r) = 17 m

Height of the cylinder (h) = 12 m

Slant height of the cone (l) = 20 m

To find the surface area of the fig

Surface area of the fig = surface area of cylinder + surface area of cone

Formula

Surface area of cylinder = 2πrh

Surface area of cone = πrl

So,

Surface area of cylinder = 2π×17×12 sq m = 408π sq m

Surface area of cone = π×17×20 = 340π sq m

Surface area of the fig = 408π+340π sq m = 748π sq m

= 2350.9 sq m (approx)