Question

The perimeter of a rectangular garden is 240 feet. If the length of the garden is 69 feet, what is its width?

Answer 1

Perimeter of rectangle: $P=2a+2b$

Put in data given $a=69$ (height) and $P=240$ (perimeter)

$240=2\times69+2b$

Now solve for b (width).

$2b=240-2\times69$

$b=\frac{240-2\times69}{2}=\boxed{51}$

It's width is 51 feet. Hope this helps.

r3t40