3 years ago

Area of the painted part

Mathematics

2 answers:

gregori [183]3 years ago

5 0

Answer:

59.73 cm²

Step-by-step 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

kykrilka [37]3 years ago

4 0

Answer:

Step-by-step explanation:

7 + 7 + 11 + 11

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Area of ​​the painted part

Area of the painted part