First you have to find the area of the triangle ( 4 + 6 = 7.2) then you have to subtract that area from the area of the rectangle ( 66 - 7.2 = 58.8). The answer is 58.8
7/8 / 11/12. First get the reciprocal of 11/12 (which is 12/11). Then multiply by the reciprocal. 7/8 * 12/11 = 84/88
don't forget to simplify
21/22
If I'm not mistaken, the correct answer would be C: =. Hope this helps :D