Rectangular Prism Surface Area Calculator
Quickly calculate the surface area of a rectangular prism by entering its dimensions.
Surface Area Result
Surface Area (SA):
Formula Used: $$SA = 2(lw + lh + wh)$$
3D Visualization
Understanding Rectangular Prism Surface Area
A rectangular prism is a 3D shape with six rectangular faces. Think of it like a box. To find its surface area, you're essentially calculating the total area of all these faces combined.
The formula for the surface area (SA) of a rectangular prism is given by: $$SA = 2(lw + lh + wh)$$ where:
- l is the length of the prism.
- w is the width of the prism.
- h is the height of the prism.
This formula adds up the areas of each pair of opposite faces: two faces with area $$lw$$, two with area $$lh$$, and two with area $$wh$$.
Use this calculator to quickly find the surface area for your geometry problems, DIY projects, or educational purposes!