Question

What is the surface area of the cone?
A. 115π cm^2
B. 120π cm^2
C. 90π cm^2
D. 65π cm^2

Answer 1

Do you know the formula?

Answer 2

nope :/

Answer 3

total surface area for a cone => \(\bf \pi r \sqrt{r^2+h^2}+\pi r^2\)

Answer 4

where l is the side length of your cone

Answer 5

Do you know what "r" is in your figure?

Answer 6

the height is 12

Answer 7

radius is 5?

Answer 8

yes, and yes

Answer 9

formula produces the answer like magic

Answer 10

65π+ 25π= 90π?

Answer 11

yep

Answer 12

thank you :)

Answer 13

np