Shape Calculator
Pick a shape, type its sizes, and see the diagram and the answer.
All sizes are in cm. Answers are in cm² or cm³.
Pick a shape to start.
How it works
Area is the space inside a flat shape, perimeter is the distance around it, volume is the space inside a solid shape, and surface area is the area of all its faces. The diagram redraws to match the sizes you type, so you can see which size changes which side.
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