Question

What is the surface area of the cone to the nearest whole number? Use 3.14 for π.

2,198 m2
3,429 m2
2,813 m2
1,231 m2

Answer 1

We know, Surface area of a cone = πr² + πrl
s = 3.14 * (14)² + 3.14 * 14 * 50
s = 615.44 + 2198
s = 2813.44 m²

In short, Your Answer would be Option C

Hope this helps!

Answer 2

2813 sq.m.

Explanation:

Height of cone = 48 m

Diameter of cone = 28 m

Radius of cone =
`(Diameter)/(2) = (28)/(2)=14 m`

Slant height l = 50 m

Total Surface area of cone =
`\pi r l +\pi r^(2)`

=
`3.14 * 14 * 50 +3.14 * 14^(2)`

=
`2198 +615.44`

=
`2813.44 m^2`

Thus the surface area of the cone to the nearest whole number is 2813 sq.m.

Hence Option C is correct.