Circle Area Circumference Problems
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Circle Area Circumference Problems
📐 Part 1: Circumference Word Problems
Remember: Circumference = 2πr or πd (Use π ≈ 3.14)
Answer: __________ inches
Answer: __________ feet
Answer: __________ inches
Answer: __________ feet
⭕ Part 2: Area Word Problems
Remember: Area = πr² (Use π ≈ 3.14)
Answer: __________ square feet
Answer: __________ square feet
Area: __________ square feet
Total Cost: $ __________
Answer: __________ inches
🔄 Part 3: Mixed Practice
Circumference: __________ feet
Area: __________ square feet
Answer: __________ inches
Circle Area Circumference Problems - Answer Key
📐 Part 1: Circumference Answers
Work: C = 2πr = 2 × 3.14 × 14 = 87.92 inches
Answer: 88 inches
Work: C = πd = 3.14 × 12 = 37.68 feet
Answer: 37.68 feet
Work: C = 2πr = 2 × 3.14 × 8 = 50.24 inches
Answer: 50.24 inches
Work: 628 = 2πr → r = 628 ÷ (2 × 3.14) = 628 ÷ 6.28 = 100 feet
Answer: 100 feet
⭕ Part 2: Area Answers
Work: A = πr² = 3.14 × 10² = 3.14 × 100 = 314 square feet
Answer: 314 square feet
Work: A = πr² = 3.14 × 3² = 3.14 × 9 = 28.26 square feet
Answer: 28.26 square feet
Work: A = πr² = 3.14 × 15² = 3.14 × 225 = 706.5 square feet
Cost = 706.5 × $2 = $1,413
Area: 706.5 square feet
Total Cost: $1,413
Work: 113.04 = πr² → r² = 113.04 ÷ 3.14 = 36 → r = 6 inches
Answer: 6 inches
🔄 Part 3: Mixed Practice Answers
Circumference: C = 2πr = 2 × 3.14 × 7 = 43.96 feet
Area: A = πr² = 3.14 × 7² = 3.14 × 49 = 153.86 square feet
Work: 78.5 = πr² → r² = 78.5 ÷ 3.14 = 25 → r = 5 inches
Answer: 5 inches
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