Grade 7 · G
Area and Circumference of Circles
Circumference = πd (or 2πr); Area = πr². π ≈ 3.14159.
Grade 7Common Core 7.G.B.4GVerified correct ✓
Worked examples
Find the area of a circle with radius 13. Use π ≈ 3.14159. Round to 4 decimal places.
Answer: 530.929
Find the area of a circle with radius 1. Use π ≈ 3.14159. Round to 4 decimal places.
Answer: 3.1416
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