64 cm²
cut those into 3 shapes, which are two squares and one rectangle. After that, you calculate those two squares which you do base x height or length x width, and it is equaled to (4)(5)= 20. The pther square is the same. Now, on the rectangle part, you do the same, but since you cant really determine which one is the base and which one is the height, the base is 12, and to find the unknown height, you subtract 7-5= 2. Now you do (12)(2)= 24. Now add all those 3: 24+20+20= 64 cm²
