# What is the area of a square computer screen with 21-in. sides?

A square computer screen will have a formula similar to the area of a square.

## Answer: The area of a computer screen with 21-in. sides is 441 square inches.

Let us go through the explanation to understand better.

**Explanation:**

Area of square = (Side)^{2}

Side of computer screen = 21 in.

Area of computer screen = (21)^{2} = 441 sq. in.