Answer:
The answer is B
Step-by-step explanation: The pythagorean theorem is in a right triangle, the sum of squares of 2 sides of right angle equals the square of hypotenuse. So [tex]6x^{2} +8x^{2}[/tex]= 36+64=100
And the [tex]\sqrt{ 100[/tex] equals 10 so B is the answer
