Answer:
9√6
Step-by-step explanation:
4√6+5√6
=(4+5)√6
=9√6
Answer:

Step-by-step explanation:
A circle centered at (0,0) with radius r is 
Since your circle has diameter of 12, then its radius is 6. Then 
So a possible answer is: 
If you want to move the location of the center, but keep it on the x-axis, then add or subtract a number to the x, such as this:

The center of this circle would be (-4, 0) which is still on the x-axis.
Yes! It can!
The 12 meters will be the hypotenuse, the 10 meters can be a side and the 8 meters can be another side.
Answer:Phytagorean thereom
Step-by-step explanation:it helps really try it.