A small plane is flying a banner in the shape of a rectangle. The area of the banner is 144 square feet. The width is one four the length of the banner. What are the dimensions of the banner
We know that area of rectangle its equail A=l*w. We know that length is 4 times greater than width, so we can say l=4x and w=x Knowing that area A=144 we can say 4x*x=144 [tex]4x^2=144 \\ x^2=36 \\ x=6[/tex] - w=6 - its the width l=6*4=24 - its the length
