We know that area is length times width. In this case, the answer is 6060 so you need factors that multiply to 6060 like:
4 xx 15, 6 xx 10 and 5 xx 12.4×15,6×10and5×12.
The Pythagorean Theorem also tells us that that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
13^2 = 169132=169.
Looking at your list of factors, 4 and 154and15 won't work
(16 + 225 = 24116+225=241) and neither do 6 and 10 (36 + 100 = 13636+100=136).
5 and 125and12 reveal 25 and 14425and144, which do add to 169.169.
:. the length is =12m and the height 5m.
