📐 Math
Area Calculator
Calculate the area of various 2D geometric shapes including rectangles, triangles, circles, and trapezoids. Select your shape and input the required dimensions.
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Formula
Rectangle: A = l × w | Circle: A = πr² | Triangle: A = ½bhl, w- Length and Width
r- Radius
b, h- Base and Height
Example
Calculating the Area of a Circle
Find the area of a circle with a radius of 5 cm.
- Select the Circle shape.
- Enter the radius: r = 5.
- Square the radius: 5² = 25.
- Multiply by π (approx. 3.14159): 25 × π ≈ 78.54.
- Result: 78.54 cm²
Frequently Asked Questions
No, the mathematical formula works the same regardless of the unit (inches, meters, feet). Just ensure that all inputs use the same unit. The result will be in square units of whatever input you used.