Giúp vs ạ ----- Nội dung dịch tự động từ ảnh ----- 7 8 6 Exercise 6. (Cambridge Checkpoint) Copy and complete the workings to find the area of the shaded section in this diagram. Area of large rectangle = 30 x = (cm²) Area of hole = 8 x = (cm²) Blue area=-= (cm²) Exercise 7. This black and white tile is 36 cm². What is the area of the black part of the tile? 10 cm 8 cm 30 cm 4 cm Exercise 8. (AIMO) In the 6 x 8 square, each square is 1 cm², what is the shaded area, in cm²?
