## 1.3 Surface Area and Volume of Composite Shapes

Note: if you cannot remember the formulas for the surface area and volume of common shapes, revise notes for 1.1 Surface Area of Common Shapes and 1.2 Volume of Common Shapes.

### Guide to Finding the Surface Area of a Composite Shape

**Composite shapes**are shapes that are created by merging multiple simple shapes.- Due to the large amount of combinations possible, it is
**not**possible to derive formulas for each. - To find the surface area of a composite shape, you need to first identify the simple shapes it is made up of. The
**surface area of the composite shape**is equal to the**sum**of each shape,**minus**the surface area which has been removed to merge it into the shape: