1, shadow area = large square area-circular area+small square area;
2. When the square area = 8m× 8m,
3. Circular area =0.25πd? , diameter d= square side length = 8m
4, small square area = side length x side length, side length = circle diameter /√2 = 8m/√ 2.
shaded area
= large square area-circular area+small square area
= 8m x 8m-0.25xπ x (8m)？ +(8m /√2)？
=64- 16π+32 (m2)
=96- 16π (m2)
= 16(6π) m?