Determine the length of the unknown side of the right triangle. If it is not an exact answer, what integer is it closest to? (Don't forget to include units!)

Answer:
=> The third side of the triangle is √53 mm
Step-by-step explanation:
We know that this is a right angled triangle ,
so , by using Pythagoras theorem we can find out the third side of the triangle ,
=> P²+B²= H²
=> 7²+2² = H²
=> 49+4 = H²
=> 53 = H²
=> √53 = H
The third side of the triangle is √53mm