# Math Formulas

**Surface Area of a Cube = 6 a 2**

**Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac**

**Surface Area of a Sphere = 4 pi r 2 **

**Surface Area of a Cylinder = 2 pi r 2 + 2 pi r h**

cube = a 3

rectangular prism = a b c

irregular prism = **b** h

cylinder = **b** h = *pi* r 2 h

pyramid = (1/3) **b** h

cone = (1/3) **b** h = 1/3 *pi* r 2 h

sphere = (4/3) *pi* r 3