IN THE FIGURE SHOWN, THE DISTANCE BETWEEN ADJACENT DOTS IN EACH RO...

4. - Đề thi Toán IMSO2018 ở Thường Châu, Trung Quốc
Toán Đề thi Toán IMSO2018 ở Thường Châu, Trung Quốc

4. In the figure shown, the distance between adjacent dots in each row and each

column is 1 cm. What is the area of the shaded region, in cm 2 ?