Question

Find the surface area of a cone with a slant height of 19 and a radius of 7. Use 3.14 for π. Round your answer to the nearest tenth.

Answer 1

Surface Area = πrs + πr^2
where r is the radius and s is the slant height

Answer 2

So do i multiply the slant height and radius?

Answer 3

So your working would be
(π x 19 x 7) + (π x 7^2)

Answer 4

what does ^ mean? Squared ?

Answer 5

Yes \[7^{2}\]

Answer 6

is this the formula to use with any cone ?

Answer 7

For the surface area of any cone yes

Answer 8

Find the surface area of a cone with a slant height of 17 and a radius of 9. Use 3.14 for π. Round your answer to the nearest tenth.

So will i do this? (3.14x9x17 + 3.14x81) ?

Answer 9

Yes you just use the formula.