Problema Solution
the length of a rectangle is x units and the width is x-5. find an equation for the perimeter and area of the rectangle
Answer provided by our tutors
The formula for the perimeter of a rectangle, P, is:
P = 2(length +width)
In our case length = x and width = x - 5. We plug these values in the formula to find:
P = 2(x + (x - 5))
P = 2(x + x - 5)
P = 2(2x - 5)
P = 4x - 10 units
The formula for the area of a rectangle, A, is:
A = length*width
In our case length = x and width = x - 5. We plug these values in the formula to find:
A = x*(x - 5)
A = x^2 - 5x square units