Volume and surface area of a solid
Pick a solid, enter its dimensions, and get the volume and surface area — with the formula and a 3D view.
Result
24 units³
volume · V = l × w × h
52 units²
surface area · SA = 2(lw + lh + wh)
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How is this calculated?
Using the tool
Pick a solid, enter its dimensions, and get the volume and surface area — with the formula and a spinning 3D view. Units are yours: answers come out in those units cubed and squared.
The formulas
Volume measures the space inside a solid; surface area measures its skin. A box or cylinder is base area × height. A cone is exactly a third of the cylinder with the same base and height. A sphere has its own formulas, with the radius cubed for volume and squared for surface area. The cone's slant height — √(r² + h²), the distance up its sloped side — is what its surface area needs.