What is 25386 rounded to the nearest 1000

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

Can someone me with these two circle theorem questions asap?

Pls yall i really need the answer fr fr