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Circle of radius 6 cm: find the area
A circle has a radius of 6 cm. Find the area of this circle.
Answer
Area 113.1
Step-by-step
- π × 6 × 6 = 113.1Circle area = πr²
Why it works
The area of a circle is pi times the square of the radius, so the radius is squared first and then multiplied by pi.
Common mistakes
- Treating the radius 6 cm as if it were the diameter.
- Using 2 × 3.14 × 6, which is the circumference formula.