Question

Find the area of the sector formed by central angle (theta) = 3pi/5 in a circle of radius r=4m.

Answer 1

\[\underline{\text{area of sector}}=\frac{1}{2}r^2 \theta\]\[=\frac{1}{2}(4m)(\frac{3}{5}\pi)\]

Answer 2

So, would I be left with 2m (3/5pi)?
Then, left with 6pi/5?

Answer 3

the m is meters? or just a variable?

Answer 4

It's meters.

Answer 5

oh then yeah u got it:)

Answer 6

Well, when I put it in the calculator, it came out to be 3.77. That answer is wrong somehow. :/

Answer 7

why wrong? ..do u have the right answer?

Answer 8

I'm pretty sure I did it right, by the formula you gave me. That is a correct formula.

Answer 9

ohhhh i did something wrong lol

Answer 10

forgot to square the radius\[A=\frac{1}{2}(4)^2(\frac{3}{5}\pi)\]

Answer 11

Im sorry -_-'

Answer 12

Oh!!!
No, it's fine!

Answer 13

Now you'll get it right:)

Answer 14

Mhm!!! :D

Answer 15

http://www.wolframalpha.com/input/?i=0.5*16*3pi%2F5

Answer 16

Got it! :) Thank you!!

Answer 17

:)