Question

What is the radius?
PLEASE HELP???

Answer 1

Radius is a straight line from the center to the circumference of a circle or sphere.

Answer 2

@casdawson could you help?

Answer 3

i know @zarkam21 lol, look at my link though

Answer 4

You need to divide so take the number of square meters and divide by the pie symbol

Answer 5

What do you get?

Answer 6

21.0084

Answer 7

So your answer would be...? =)

Answer 8

\[A=\pi*r^2\]\[66=\frac{22}{7}*r^2\]\[\frac{7}{22}*66=r^2\]\[\frac{462}{22}=r^2\]\[21=r^2\]\[\sqrt{21}=r \]

Answer 9

lol 21?? wait, where dose the 22/7 come in at?

Answer 10

thank you guys!!

Answer 11

No problem :)

Answer 12

could you help with this one too?

Answer 13

@LegendarySadist

Answer 14

I'm not that good at graphs like that, sorry =(

Answer 15

aww, its okay thank you anyway

Answer 16

Second to last answer

Answer 17

No problem, wish I could help. If you ask it as a separate question someone more qualified will help though.

Answer 18

good suggestion! @LegendarySadist , on the second problem? @casdawson