Question

the side of a regular decagon is denoted as r Express the perimeter in terms of r (decagon is a regular polygon having 10 equal sides)​

Answer 1

Answer:

A regular decagon is a polygon with 10 sides and the lengths of all the 10 sides are equal. ... The PERIMETER of a polygon is equal to the sum of the lengths of all its sides. Therefore, the PERIMETER of the given regular decagon is given by. Thus, the required perimeter of the given regular decagon is 10l.