# Open Middle: Surface Area and Percent

- Author:
- Tim Brzezinski

- Topic:
- Area, Arithmetic, Geometry, Percentages, Ratios, Solids or 3D Shapes, Surface

In the apps below,

**S**refers to the surface area of a rectangular prism.- Author:
- Tim Brzezinski

- Topic:
- Area, Arithmetic, Geometry, Percentages, Ratios, Solids or 3D Shapes, Surface

In the apps below, **S **refers to the surface area of a rectangular prism.