Question 621585

Length = l
Width = w
Perimeter = p = 50
Given
------
The length of a rectangle is four times its width
l=4w




Perimeter of rectangle = 2(l+w)
50=2(4w+w)
50=2(5w)
50=10w
50/10=w
5=w
w=5




Area of rectangle = length * width
a=l*w
a=4w*w
a=4w^2............(1)
Put the value of w in (1)
a=4(5)^2
a=4(25)
a=100in^2



Area of rectangle is 100 square inches.