Question 360697
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Hi,
Applying the Pythagorean Theorem a^2 + b^2 = c^2 (diagonal being the hypotenuse)
13cm^2 - 5cm^2 = L^2
169cm^2 - 25cm^2 = L^2
144cm^2 = L^2
12cm = L
the length of the rectangle is 12cm