Question

Can u help me with the Extra Credit i tried but still cant get it -___-
http://instagram.com/p/TBa3HrmH9y/

Answer 1

It has something to do with common sides and common angles.

Answer 2

You have enough info to solve for all the quantities for a single triangle. Find its area. Multiply by 4. Done.

Answer 3

thats the problem i dont know how to work it out lol

Answer 4

Okay do you know trig?

Answer 5

yes

Answer 6

You can just do the area of a circle divided by 6, times two

Answer 7

i dont know the area though

Answer 8

but you know radius, so you can find area

Answer 9

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. :)

Answer 10

240=180+60;

Answer 11

so the answer is 4/3 pi cm^2 ?

Answer 12

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.

Answer 13

Area of circle= pi(2^2)=4pi/6*2=4/3 pi

Answer 14

so type 4/3 pi cm^2 in the calculator and get the nearest hundredth?