A circle touches all the four sides of a quadrilateral ABCD whose sides are AB=6cm , BC=7cm , and CD=4cm.Find AD.
Here is the solution to your answer-
Given that: ab = 6 cm, bc = 7 cm, cd = 4 cm
Since abcd is a quadrilateral, and a circle is inscribed in the quadrilateral,
So,
Substitute all given value in equation (1), we get,