Area Calculator
Area is the measure of a region in the plane, typically in square units.
Area measures planar region size. Name the shape so the correct formula is used.
Solve a problem
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Example problems
How this solver works
- Identify the shape.
- Substitute into its area formula.
Worked examples
Circle r=5
- 25π
Answer: 25π
Common mistakes
Mixing units
Convert all lengths to the same unit before multiplying.
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Frequently asked questions
Rectangle area?
Use length × width. A dedicated rectangle phrase can be added; for now multiply those two numbers as an expression.