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.

Question

anonymous · Answer

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

anonymous · Answer

So do i multiply the slant height and radius?

anonymous · Answer

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

anonymous · Answer

what does ^ mean? Squared ?

anonymous · Answer

Yes $$7^{2}$$

anonymous · Answer

is this the formula to use with any cone ?

anonymous · Answer

For the surface area of any cone yes

anonymous · Answer

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) ?

anonymous · Answer

Yes you just use the formula.