Question

.
A semicircular paper is folded along a chord such that the folded circular
arc is tangent to the diameter of the semicircle. The radius of the semicircle
is 4 units and the point of tangency divides the diameter in the ratio
7: 1. If the length of the crease (the dotted line segment in the figure) is
I then determine 12.​

Answer 1

Answer:

.

A semicircular paper is folded along a chord such that the folded circular

arc is tangent to the diameter of the semicircle. The radius of the semicircle

is 4 units and the point of tangency divides the diameter in the ratio

7: 1. If the length of the crease (the dotted line segment in the figure) is

I then determine 12.