Draw a straight line at a height of 2 meters, with two intersections with the arch, and find the distance between the two focuses. First find the radius, let the radius be x, and there is Pythagorean theorem;

(X-2.4)^2+3,6^2=X^2

Acquisition radius

reuse

x^2-2^2=d^2

If 2d is less than 10. You can't pass