Question

Hey guys, is this correct?

Ss below

Answer 1

area of sector \(\frac{1}{2}(r^2)(\theta) = A\)

For the first one you have
\(\frac{1}{2}(10^2)(\theta)=100 \\ \frac{1}{2}(100)(\theta) = 100\\50\theta = 100\\ \theta = 2\)

Answer 2

"Leave in terms of pi (if needed)" it's not needed for the first one, because it's just 2 radians

Answer 3

Oh I thought it was over 360

Answer 4

For the second one
\(\frac{1}{2}(r^2)(\frac{\pi}{3}) = 6\pi\)
\(\frac{\pi}{6}(r^2) = 6\pi\)
\(r^2 = 36\)
\(r=6\)

Answer 5

for the third one
\(V = \frac{1}{2}(4^2)(\frac{\pi}{2})\)
\(V = \frac{1}{2}(16)(\frac{\pi}{2})\)
\(V = 8(\frac{\pi}{2})\)
\(V = 4\pi\)

Answer 6

honestly, i'm so confused on how you got your three answers
care to explain?

Answer 7

I thought the formula was θ/360 (pi)(r^2) = A

Answer 8

Lol well thanks anyways :)

Answer 9

one sec let me go to your previous problem

Answer 10

which one?

Answer 11

okay so

Answer 12

So remember there are two different formulas for circle things, radians and degrees, and know when to use which