If L is the length and W is the width, then the area is LW (L times W, or length times width). And the problem says that LW = 300. So to find W you divide both sides of that equation by L, and that gives W = 300/L.

If you copied the question EXACTLY as written, the answer to the question is “L” – Quite confusing.

I suspect a typo/misprint.

The area of of a rectangle is length times height. If I have an area of 300 sq ft, and one side has a length of L feet, the height must be 300 divided by L, or 300/L feet.

A = L * h

300=L*h

300/L=h

So yo will get a formula not actuall values

The formula could be used to substitute real values

HINT

Area=LxB

300=LxB

what is L with no other values?

make L the subject