# How to find the lateral area of a rectangular prism?

A rectangular prism is a three-dimensional solid that has all its lateral faces in rectangle shape.

## Answer: The lateral surface area of a rectangular prism can be found using the formula 2 ( l + b ) h.

Let's see a detailed explanation.

**Explanation:**

A rectangular prism has rectangular bases that are congruent to each other.

The lateral surface area is the product of the perimeter to the total height of the prism.

Lateral surface area = perimeter × height

L.S.A = 2 ( l + b ) × h

You can use Cuemath's Online Surface Area of a Rectangular Prism Calculator to find the surface area of a rectangular prism.