Look at the triangle abc. what length of side ab of the triangle? a.2 b. square root of 20 c.6 d. square root of 38

Hello!

To find our answer, we can use the Pythagorean Theorem. This is a²+b²=c², where a and b are the legs and c is the hypotenuse.

As you can see, AB is the hypotenuse. Therefore we just plug in values for a and b, or the other sides that are legs.

2²+4²=c²

4+16=c²

To find c, we undo our exponent by adding a square root to both sides.

c=√20

Therefore, our answer is B.

I hope this helps!

17.08

correct me if i am wrong.