486,575 views
35 votes
35 votes
Find the length of the third side. If necessary, write in simplest radical form.

Legs- 9 and 7


Hypotenuse-?

User Koustuv Ganguly
by
2.8k points

2 Answers

17 votes
17 votes

Answer:

√130

Explanation:

|

? | 7

|

---------------------------

9

a² + b² = c²

7² + 9² = c²

49 + 81 = c²

130 = c²

√130 = √c²

√130 = c

I hope this helps!

User Sherman
by
2.7k points
15 votes
15 votes
So all you do is use Pythagorean theorem
You do 9^2 + 7^2 = x^2
81+49=x^2
130=x^2
Square root of 130 is
A decimal so simplistic radical form is square root 130
User Jstn
by
2.4k points