Answer:
5 or 7 metres
Explanation:
{24 = 2w + 2l
{35 = wl
Setting it up like this, plugging 5 and 7 into both equations for w and l will not alter a thing. You will still get the exact same result, no matter the possible outcomes.
By the way, I think you meant 24 m, not cm..
I am joyous to assist you anytime.