Explanation:
as it is a right angled triangle
we can find its 3rd side with the help of hypotenuse formula.
according to it
h² = a² + b²
here,
h = hypotenuse i.e. longest side of a right angled triangle
a = side
b = base
now,
a/q we have to find h (or hypotenuse) of the right angled triangle
h² = (12)² + (5)²
h = 144 + 25
h = 169
h² = √169 = 13
therefore, 3Rd side of the triangle is 13.
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