Question

Find the surface area of a cone with a diameter of 13 and a slant height of 5. (use 3.14 for pi)
Answer 234.72
433.28
198.75
734.76

Answer 1

simply use the formula man!

Answer 2

i tried but the foormula is soo confusing with this problem

Answer 3

ok, wait.

Answer 4

ok

Answer 5

pi * r * r + pi r * L(slant height)

Answer 6

use this formula.
otherwise i will help.

Answer 7

i tried but what do i use as r thats all i need help on

Answer 8

r = radius = half of the diameter.

Answer 9

in this case, 13/2 = 7.5

Answer 10

ok thnx

Answer 11

welks!

Answer 12

ok i need help because i still cant get it

Answer 13

Lol, ok.. whihc part u didnt understand?

Answer 14

huh?

Answer 15

pi * r * r + pi r * L
(pi * 7.5 * 7.5) + pi * 7.5 * 5

equals:
234.72

Answer 16

thnk you saifoothats how i did it but somehow i didnt get that

Answer 17

Uw. :)