Area of a circle

By Ashok Kumar, B.E.

Fact-checked: February 16, 2026

Formula

$A \,=\, \pi r^2$

Proof

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Ashok Kumar, B.E.

Founder of Math Doubts

A Specialist in Mathematics, Physics, and Engineering with 14 years of experience helping students master complex concepts from basics to advanced levels with clarity and precision.

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