Step-by-step explanation:
h= 82 in
b= 18 in
p= x
we know,
according to pythagoras theorrem,
h^2 = p^2+b^2
82^2=x^2+18^2
6724 = x^+324
6724-324= x^2
6400= x^2
√6400 = x
80= x
the measure of missing side is 80.
