Math

Area of a Circle Calculator

A = π r².

Calculated Output

Area 78.54

Step-by-Step Breakdown

1. Values used:

2. Radius = 5

3. Radius squared = 5 x 5 = 25

4. Area = pi x Radius squared = 3.142 x 25 = 78.54

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Frequently Asked Questions

Diameter?

A = π(d/2)².