Question

find the surface area of a cone with the raduis 8.8 cm and slant height of 7.1 cm , to the nearest square unit , whats the answer i wanted to check my work 636cm^2 ?

Answer 1

or 683cm^2

Answer 2

No. It's wrong.
SA = πr^2 + πrl
SA = π(8.8)^2 + π(8.8)(7.1)
SA = 77.44π + 62.48π
SA = 139.92π
SA = 439.3488 cm^2

Answer 3

ughh , mann

Answer 4

This the same problem as before right?

Answer 5

You probably just multiplied incorrectly or something.

Answer 6

yea , i was checking my work

Answer 7

but thanks a lot (:

Answer 8

You're welcome :)