Question

Please please please help quick

Answer 1

Answer:

$3\sqrt{5}$

Step-by-step explanation:

Since the triangle has a right angle, we are going to use pythaogoran theoem, which is $a^{2} +b^{2} =c^{2}$, where a and b are the legs and and c is the hypotunese/ slated side.  Let set it up.

$3^{2} +6^{2} =c^{2}$

9+36=c^2

45=c^2

$\sqrt{45}$=

Then we are going to find a perfect squarre root(1,4,9,16,25....) to simplify the radical

The perfect square root is 9 because 9 goes into 45 5 times.

$\sqrt{9x5}$

Then take the sqr root of 9 and we have $3\sqrt{5}$