"A window in the form of   a rectangle is surmounted by a semi-circular opening.
Channel: Doubtnut
Date: 28/06/2020

"A window in the form of
 
  a rectangle is surmounted by a semi-circular opening. The total perimeter of
 
  the window is 10m. Find the dimensions of the rectangular part of the window
 
  to admit maximum light through the whole opening."