Answer these 3 pls find the shaded region

7) 100in²

8) 56cm²

9) 51in²

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7. 100

8. 56

9. 51

Step-by-step explanation:

Area of triangle: Length × breadth ÷ 2

Area of rectangle/square: Length × breadth

7. Area of shaded region = (20 × 10) - (20 × 10 ÷ 2)

                                          = 100

8. Area of shaded region = (8 × 8) - (4 × 4 ÷ 2)

                                          = 56

9. Area of shaded region = (15 × 5) - (3 × 8)

                                          = 51

there is no grid

step-by-step explanation:

b. 2 and 4

step-by-step explanation: