Question

I NEED HELP ASAP PLEASE AND THANK YOU!
The diameter of the base of a right cone is 8 cm. If the total surface area of the cone is 164(pi) cm2, what is the length of the slant height? (Will Medal and Fan for best answer)

Answer 1

@Ashleyisakitty If you could help me i would very mich appreciate it! :P

Answer 2

@Nnesha could you help me?

Answer 3

hello

Answer 4

you there?

Answer 5

yes

Answer 6

\[A=\pi r (r+\sqrt{h^2+r^2})\]

Answer 7

That is the formula for the surface area

Answer 8

Hold on this is a multiple choice question so these are the answers i just need to narrow it down
12.5 cm
19.5 cm
37 cm
45 cm

Answer 9

okay the formula will help me hold on

Answer 10

i kept getting 9.05 for the slant height

Answer 11

we need to find the height using the formula and then use pythagorean to find the slant length

Answer 12

ok, give me a sec

Answer 13

i got 9.05 as well

Answer 14

yeah but it isnt one of the answers. You have to square root 17 so i was wondering if i should just put 17

Answer 15

huh, that's strange

Answer 16

*19.5

Answer 17

its close to 17

Answer 18

ohhhhhh 164pi

Answer 19

i didn't see that pi, let me try again

Answer 20

i think its 37

Answer 21

that's what i got

Answer 22

looks good to me

Answer 23

Me too

Answer 24

Ill go with that thank you very much

Answer 25

no problem