Answer:

1. 60 ft²

2. 120. 86 in²

3. 34 m²

4. 144 m²

Step-by-step explanation:

1. A = l × w

7 ft × 12 ft = 84 ft²

8 ft × 3 ft = 24 ft²

84 ft² - 24 ft² = 60 ft²

2. A= πr²

3.14(7 in)² = 153. 86 in²

A= l × w

11 in × 3 in = 33 in²

153. 86 in² - 33 in² = 120. 86 in²

3. A = b × h

6 m × 7 m = 42 m²

A= l × w

4 m × 2 m = 8 m²

42 m² - 8 m² = 34 m²

4. A= s²

(15 m)² = 15 m × 15 m = 225 m²

(9 m)² = 9 m × 9 m = 81 m²

225 m² - 81 m² = 144 m²

-brainliest please