Question

Area of ​​the painted part

Answer 1

59.73 cm²

Explanation:

`2\pi r`

2 × π × 7

2 × 3.14 × 7

43.96 ÷ 4

10.99 cm²

11 cm - 7 cm = 4 cm

`2\pi r`

2 × π × 4

2 × 3.14 × 4

25.12 ÷ 4

6.28 cm²

10.99 cm² + 6.28 cm² = 17.27 cm²

7 cm × 11 cm = 77 cm²

77 cm² - 17.27 cm²

59.73 cm²

Answer 2

36

Explanation:

7 + 7 + 11 + 11