Problem: area of rectangle is 128 in2 if lenght is twice the width what is the length
The area of a rectangle is 128 in squared. If the length os twice the width what is the length of the rectangle.
a = l * w
l = 2w
a = 2w * w
a = 2w^2
128 sq in = 2w^2
64 sq in = w^2
8 in = w
l = 2w
l = 2 * 8in
l = 16 in