As shown in the figure, in the triangle ABC, ad is vertical to BC, be is vertical to AC, CF is vertical to AB, and the perpendicular feet are D, e, F. BC equals 16, ad equals 3, CF equals 6. Calculate the circumference of ABC

As shown in the figure, in the triangle ABC, ad is vertical to BC, be is vertical to AC, CF is vertical to AB, and the perpendicular feet are D, e, F. BC equals 16, ad equals 3, CF equals 6. Calculate the circumference of ABC

Because ad is equal to be, and ADB and AEB are right triangles, so ADB and AEB are congruent. So the angle abd is equal to the angle BAE, so ABC is isosceles triangle, so AC = BC, f is the midpoint. So AF is equal to 5, because CF is equal to 12, so AC is equal to 13, BC = 13, so perimeter is 10 + 13 + 13 = 36