I will tell u how to solve it. First cut of the top triangle and do 25 times 15 divided by 2 . Then u do the area of the rectangle by doing 30 times 15. Then u add the two numbers together and u have ur final answer/area. Hope this helps!
Okay, now let cut this complex figure to get the two shape-rectangle and triangle, now the rectangle has has the area of 30 times 15 which equal 450 square mm, and the triangle has an area of 1/2 times 10 times 15 which equal 75 square mm, so the area of the composite figure is 525 square mm. Hope it help!
