is this correct? The conical hat shown here is a traditional sun-protective straw hat originating in eastern Asia. What is the approximate outer surface area of one of these hats that has a radius of 9 inches and a slant height of twelve inches? Keep in mind that there is an opening in the hat where the base surface would normally be. Show the steps of your solution and explain your work.

I got: answer: 339.12
you just use the formula
SA = PI x r x SH
3.14 x 9 x 12
28.26 x 12
=339.12

Question

is this correct? The conical hat shown here is a traditional sun-protective straw hat originating in eastern Asia. What is the approximate outer surface area of one of these hats that has a radius of 9 inches and a slant height of twelve inches? Keep in mind that there is an opening in the hat where the base surface would normally be. Show the steps of your solution and explain your work. 

I got: answer: 339.12
you just use the formula
SA = PI x r x SH
3.14 x 9 x 12
28.26 x 12
=339.12

anonymous · Answer

I have a strong feeling it's wrong.

lncognlto · Answer

Well, the surface area is equal to Pi x r x sh, so 3.14 x 9 x 12, which does equal 339.12. It does seem to be correct...

anonymous · Answer

Okay thank you so much, I was scared i got it wrong.

anonymous · Answer

I gave you a best response (:

lncognlto · Answer

Thanks, no problem :)