Do the area of the circle as a whole minus (72/360 x radius^2) and then minus the other grey area.
First you have to find 1/3 of the marbles. That means in the twelve marvels she has, there are three even groups. Divide twelve by three and you get four. So if each group is four, it is simple from here on out. If she started out with twelve and she lost 1/3 of them(4) it would be 12-4. You know this because lost is another for for subtract. 12-4=8. She has 8 marbles left.
Answer:
I don't know I'm sorry I tried to found answers but I couldn't
Cannot reduce, it is already in simplest form. You can convert it to a decimal though, 0.671875
Total volume of light-blue paint:
Divide by 
to find how many containers he can divided this total into:
so the answer is B.
