Problema Solution

The width of a rectangle is the sum of the length and 3. The area of the rectangle is 28 units. What is the length, in units, of the rectangle?

Answer provided by our tutors

Let

x = length, x>=0

x + 3 = width

Area = 28 units

Since Area = width*length we have:

x(x + 3) = 28

........

click here to see the equation solved for x

........

x = 4 units

The length of the rectangle is 4 units.