Man wants rectangular garden adjacent to river.Length of rectangle is x2 the width.How many ft of fence he buy if he not need fencing along river and perimeter of rectangle is 240ft.

Question

Your answer must not be 160.

Answer 1

Hi Rithvika,

If the length of a rectangle is 2 times the width, then we can figure out the sides as follows:

w = width

2w = length

Perimeter of rectangle = w + w + 2w + 2w = 6w = 240

So, the width would be 40, and the length would be 80.

Now, if you don't need a fence along the river - assuming the river is along the width of 40, then you would need 200 feet of fencing. That's the only way the answer wouldn't be 160, in my opinion :).