The length of the missing side of the right triangle is 12 units.
A theorem stating that the square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the lengths of the other sides.
Given: Hypotenuse= 13 inches and leg of tree = 5 inches
(13)²= P² + (5)²
169 = P² + 25
169-25 = P²
P²= 144
P = √144
P= 12 inches
hence, the measure of missing side is 12 units.
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