Volume Calculator

V = (4/3)πr³. For a sphere with radius 5, volume = (4/3) × π × 125 ≈ 523.6 cubic units. Surface area = 4πr².

Volume is the amount of 3D space inside a solid (cubic units: cm³, ft³). Surface area is the total area of all external faces (square units: cm², ft²). Volume measures how much a container holds; surface area measures how much material it takes to wrap it.

V = πr²h, where r is the base radius and h is the height. It's the area of the circular base multiplied by the height. For example, a can with radius 4 cm and height 10 cm has volume = π × 16 × 10 ≈ 502.65 cm³.