Geometry Calculator
Area, perimeter, and volume of shapes
Formula Used
Circle: Area = πr², Perimeter = 2πr Rectangle: Area = l×w, Perimeter = 2(l+w) Triangle: Area = ½×base×height
Step-by-Step Explanation
- 1Select a shape: circle, rectangle, triangle, or square.
- 2Enter the required dimensions to see area and perimeter instantly.
Worked Examples
Example 1
Circle with radius 5
Shape=circle, Radius=5
Area ≈ 78.54, Perimeter ≈ 31.42