6th Grade Circumference and Area of Circles Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the 6th Grade area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheet6th Grade · Mathematics · Area & Perimeter6th Grade Circumference and Area of Circles Worksheet — Level 2 — Answers
Show your work. Use the π button on your calculator and round to 1 decimal place unless told otherwise.
1.A circle has a diameter of 14 cm. Find its circumference, correct to 1 decimal place.
Answer: 44.0 cm
- C = π × d = π × 14
- ≈ 44.0 cm
2.A circle has a radius of 8 cm. Find its circumference, correct to 1 decimal place.
Answer: 50.3 cm
- C = 2 × π × r = 2 × π × 8
- ≈ 50.3 cm
3.A circle has a radius of 7 cm. Find its circumference, correct to 1 decimal place.
Answer: 44.0 cm
- C = 2 × π × r = 2 × π × 7
- ≈ 44.0 cm
4.A circle has a diameter of 22 cm. Find its area, correct to 1 decimal place.
Answer: 380.1 cm2
- r = 22 ÷ 2 = 11 cm
- A = π × r2 = π × 112 = π × 121
- ≈ 380.1 cm2
5.A circle has a diameter of 4 cm. Find its area, correct to 1 decimal place.
Answer: 12.6 cm2
- r = 4 ÷ 2 = 2 cm
- A = π × r2 = π × 22 = π × 4
- ≈ 12.6 cm2
6.Find the area of a semicircle with a radius of 7 cm, correct to 1 decimal place.
Answer: 77.0 cm2
- A = ½ × π × r2 = ½ × π × 49
- ≈ 77.0 cm2
7.Find the area of a semicircle with a radius of 12 cm, correct to 1 decimal place.
Answer: 226.2 cm2
- A = ½ × π × r2 = ½ × π × 144
- ≈ 226.2 cm2
8.A circle has a diameter of 34 cm. Find its circumference, correct to 1 decimal place.
Answer: 106.8 cm
- C = π × d = π × 34
- ≈ 106.8 cm
9.A circle has a diameter of 8 cm. Find its circumference, correct to 1 decimal place.
Answer: 25.1 cm
- C = π × d = π × 8
- ≈ 25.1 cm
10.A circle has a radius of 17 cm. Find its area, correct to 1 decimal place.
Answer: 907.9 cm2
- A = π × r2 = π × 172 = π × 289
- ≈ 907.9 cm2
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