Mike bought a new LED television. He was told that the area of the screen of the TV is 300 square inches. If the width of the screen is 15 inches, then the length of the screen is ​ inches.

Answer 1

Recall that the area of a rectangle is calculated as:

A = length • width

A = l • w

For this problem, the Area is 300 square inches and the width is 15 inches. We can substitute these values in the equation and determine the length, l :

300 = l • 15

300 / 15 = l • 15 /15

l= 20 inches

The length will be 20 inches.