The area is 4800 square feet
What is a rectangle?
A rectangle is a 2-dimensional quadrilateral with four right angles. The sum of interior angles is 360 degrees
Area of a rectangle = length x width
What is the area of the football field?
Width = 10x + 10 = 160
160 - 10 = 10x
150 = 10x
x = 15
Length = (4 x 15) + 20
60 + 20
= 80
Area = 80 x 160 = 4800 ft²
To learn more about how to calculate the area of a rectangle, please check: https://brainly.com/question/16595449
