Carcass wrote:
If the perimeter of a rectangle is 24 and the length is twice the width, what is the length of the rectangle?
A. 4
B. 5
C. 6
D. 8
E. 12
Let
x = the width of the rectangle
So
2x = the length of the rectangle (since the length is twice the width)
The perimeter of a rectangle is 24We can write:
x +
2x +
x +
2x = 24
Simplify: 6x = 24
Solve:
x = 4This tells the rectangle has width
x = 4What is the length of the rectangle?Since the length is twice the width,
the rectangle has length 8Answer: D
Cheers,
Brent