"A room is 7 metres long and 5 metres broad. It   has one door measuring 2m by 1.5m
Channel: Doubtnut
Date: 2020-06-28

"A room is 7 metres long and 5 metres broad. It
 
  has one door measuring 2m by 1.5m and two windows, each measuring 1.5m by 1m.
 
  The cost of painting the walls at Rs. 12.50 per squre
 
  metre is Rs. 825. Find the height of the room."