Question

what is the surface area of a sphere with a circumference of 30ft? round to the nearest tenth

Answer 1

no need for a lengthy explination just a brief description and a answer please

Answer 2

so we know that the sphere has a circumference of 30ft


keep in mind that \(\bf circumference= 2\pi r\qquad thus\implies 30=2\pi r\implies ?=r\)

Answer 3

once you get the "r" adius
you can get the \(\bf \textit{surface area}=4\pi r^2\)

Answer 4

well my choices are 286 143 71 and 22

Answer 5

so... what did you get for "r" though?

Answer 6

I don't exactly understand how to get it

Answer 7

\(\bf circumference= 2\pi r\qquad thus\implies 30=2\pi r\implies ?=r\) solve for "r"
notice above

Answer 8

could I just get an answer please? math dosnt suit me very well

Answer 9

well... how come your teacher didn't provide the answer sheet along with the exercises though?

Answer 10

probably forgot to print it off

Answer 11

well... give him/her an email, ask him/her to send it over email
or let him/her know that she forgot to print it, thus you didn't put it in

Answer 12

and that should be fine

Answer 13

lol I ask nicely for you to simply tell me a more than likely simple answer and your sarcastic

Answer 14

sarcastic? where? I'm honest in saying that, ask him/her for it through email, he/she would understand

Answer 15

why when you can just tell me now

Answer 16

the other possibility is that, the teacher did not include it
because you're expected to do it and thus understand it

someone else doing it for you, so you can transcribe it over
will only help you handwrite better, or type for that matter

but will defeat the idea behind the exercise

Answer 17

forget it your wasting my time if your not going to tell me then just stop bothering me