What is the side length b in the triangle below?
Please help!

Answer:
5
Step-by-step explanation:
This is a special right triangle: 5, 12, 13
Or you can solve using the Pythagorean Theorem (a^2+b^2=c^)
--> 13^2-12^2=b^2
-->169-144=b^2
-->25=b^2
b=5
Answer:
solution
here
hypotenuse (h)=13
perpendicular(p)=12
now,
h^2=p^2+b^2
13^2=12^2+b^2
169=144+b^2
169-144=b^2
b^2=25
b=5