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Area of a Circle

Skill 20 · Geometry

Lesson

A circle’s area is π times the radius squared. Square the radius first, then multiply by π (use 3.14).

Example: r = 5 → 3.14 × 25 = 78.5 square units.

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Solve

Area of a circle, r = 3 (π ≈ 3.14)
units²