"The inside perimeter of a running track (shown   in figure) is 400m. The length of each
Channel: Doubtnut
Date: 2020-06-28

"The inside perimeter of a running track (shown
 
  in figure) is 400m. The length of each of the straight portion is 90m and the
 
  ends are semi-circles. If track is everywhere 14m wide, find the area of the
 
  track. Also, find the length of the outer running track."