Answer:
1) 72; 2) 72.
Step-by-step explanation:
1. the side of unshaded square is 6*√2=6√2, then the required area is (6√2)²=72;
2. if the area of the whole square is 144 and the area of the unshaded square is 72, then the required area of the shaded region is 144-72=72.
