The worksheet contains 9 circle problems. For each problem, we are given one value (radius, diameter, circumference, or area) and must calculate the other three using π = 3.14.
We’ll solve them one by one, step by step, checking our math as we go.
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Problem 1 (Top Left):
Given: Radius = 28 mm
→ Diameter = 2 × radius = 2 × 28 =
56 mm ✔
→ Circumference = 2 × π × r = 2 × 3.14 × 28 = 175.84 mm
✔
→ Area = π × r² = 3.14 × 28² = 3.14 × 784 =
2461.76 mm² ✔
All match the worksheet.
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Problem 2 (Top Middle):
Given: Radius = 24 cm
→ Diameter = 2 × 24 =
48 cm ✔
→ Circumference = 2 × 3.14 × 24 = 150.72 cm
✔
→ Area = 3.14 × 24² = 3.14 × 576 =
1808.64 cm² ✔
Matches.
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Problem 3 (Top Right):
Given: Radius = 33 ft
→ Diameter = 2 × 33 =
66 ft ✔
→ Circumference = 2 × 3.14 × 33 = 207.24 ft
✔
→ Area = 3.14 × 33² = 3.14 × 1089 =
3419.46 ft² ✔
Matches.
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Problem 4 (Middle Left):
Given: Radius = 33 yd
→ Diameter = 2 × 33 =
66 yd ✔
→ Circumference = 2 × 3.14 × 33 = 207.24 yd
✔
→ Area = 3.14 × 33² = 3.14 × 1089 =
3419.46 yd² ✔
Matches.
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Problem 5 (Middle Center):
Given: Radius = 33 inches
→ Diameter = 2 × 33 =
66 inches ✔
→ Circumference = 2 × 3.14 × 33 = 207.24 inches
✔
→ Area = 3.14 × 33² = 3.14 × 1089 =
3419.46 in² ✔
Matches.
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Problem 6 (Middle Right):
Given: Radius = 23 ft
→ Diameter = 2 × 23 =
46 ft ✔
→ Circumference = 2 × 3.14 × 23 = 144.44 ft
✔
→ Area = 3.14 × 23² = 3.14 × 529 =
1661.06 ft² ✔
Matches.
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Problem 7 (Bottom Left):
Given: Radius = 43 yd
→ Diameter = 2 × 43 =
86 yd ✔
→ Circumference = 2 × 3.14 × 43 = 270.04 yd
✔
→ Area = 3.14 × 43² = 3.14 × 1849 =
5805.86 yd² ✔
Matches.
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Problem 8 (Bottom Middle):
Given: Radius = 10 cm
→ Diameter = 2 × 10 =
20 cm ✔
→ Circumference = 2 × 3.14 × 10 = 62.8 cm
✔
→ Area = 3.14 × 10² = 3.14 × 100 =
314 cm² ✔
Matches.
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Problem 9 (Bottom Right):
Given: Radius = 27 m
→ Diameter = 2 × 27 =
54 m ✔
→ Circumference = 2 × 3.14 × 27 = 169.56 m
✔
→ Area = 3.14 × 27² = 3.14 × 729 =
2289.06 m² ✔
Matches.
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✔ All 9 problems have been verified. The worksheet is already correctly filled out. Since the user did not ask to solve any specific missing value or explain a topic, and all options (ExplainAnswer, TeachTopic, GeneratePractice) are false, no further action is needed beyond confirming accuracy.
Final Answer:
All problems on the worksheet are correctly solved with π = 3.14.
Parent Tip: Review the logic above to help your child master the concept of diameter and radius worksheet.