Question

@dumbcow

Answer 1

oh ok, same formula...but now we have to move things around because we want the angle not the arc

\[arc = r* \frac{\text{\angle}}{180} \pi = (\frac{\pi r}{180}) \text{\angle}\]
by multiplying by reciprocal we can get "angle" by itself
\[\text{\angle} = (\frac{180}{\pi r})*arc\]

Answer 2

now try plugging in arc of 6pi, and r of 8

\[Angle = \frac{180}{8\pi}* 6\pi\]

Answer 3

I get 135...

Answer 4

correct

Answer 5

So it would be none of the above?

Answer 6

yep

Answer 7

Thank you bunny much (:

(\/)
(. .)
c(")(")

Answer 8

nice

Answer 9

Are you good at finding the area of a circle? I've forgotten

Answer 10

yes
\[Area = \pi* r^2\]

Answer 11

Ok so it's giving me diameter... what's the formula then?

Answer 12

@dumbcow ? :c

Answer 13

Cause I tried just pi times the diameter and it wasn't right...

Answer 14

right pi * diameter will give you circumference

you need to know how to convert diameter to radius ----> r = d/2
easy radius is half the diameter

\[A = \pi r^2 = \pi (\frac{d}{2})^2\]

Answer 15

When I fill it in my answer doesn't correlate with the answer options.

Answer 16

oh well thats because they want area of blue part, NOT the circle :)

what did you get for circle?

Answer 17

176.625

Answer 18

good
ok you have to subtract this from area of square

Answer 19

So how do I find that?

Answer 20

find area of square with side length of 15

Answer 21

Okay, I got it. Thank you c:

Answer 22

np

Answer 23

Would you help me with some more math stuff? lol

Answer 24

sure but i need to get off in 15 min or so

Answer 25

Okay o: