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Can u help me with the Extra Credit i tried but still cant get it -___-

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It has something to do with common sides and common angles.
You have enough info to solve for all the quantities for a single triangle. Find its area. Multiply by 4. Done.
thats the problem i dont know how to work it out lol

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Okay do you know trig?
You can just do the area of a circle divided by 6, times two
i dont know the area though
but you know radius, so you can find area
You can find the ratio of the shaded to unshaded. So we have: 240 degrees of the thing is UNSHADED right? So this means that 120 degrees IS shaded. This means that 120/360=1/3. So the shaded region is 1/3 of the total region. So we need the area of the total region. We have a radius of 2 cm. This gives: 4 pi cm^2 for the TOTAL area, Multiply by 1/3 to get the area of the shaded region. so: 4/3 pi cm^2. :)
so the answer is 4/3 pi cm^2 ?
My first response I was looking at the problem above it. I mean, it says nearest hundreth so you might wanna calculator it a bit but that's the **Exact** answer.
Area of circle= pi(2^2)=4pi/6*2=4/3 pi
so type 4/3 pi cm^2 in the calculator and get the nearest hundredth?

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