Answer:
5 ×
Step-by-step explanation:
Use the Pythagorean Theorem.
base² + height² = hypotenuse²
6² + 8² = hypotenuse²
100 = hypotenuse²
hypotenuse = √100 = 10 meters
y = 2(x-a)/x
xy = 2x-2a
xy-2x = -2a
x(y-2) = -2a
x = (-2a)/(y-2)