A square blanket has an area of 64 square feet. find the length of one side of the blanket

The length of one side of the blanket is

Step-by-step explanation:

In this problem we are expected to find the side of the square shape.

we know that the area of the square is expressed as

but a square shape has all sides equal hence

substituting our area and squaring both side to find l we have

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: