The length of the unknown leg of the triangle is 15 m.
Length of one leg = 20 m
Length of the hypotenuse= 25m
As it is a right angled triangle we can use pythogoras theorem.
Let the unknown length be y
(20) (20) + y(y) = (25) (25)
400 + y(y) = 625
[tex]y^{2}[/tex]= 225
y = √225
y = 15
The length of the unknown leg is 15 m.
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