CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The length of a room is 20m and its breadth is 5m. The sum of the areas of floor and the ceiling is equal to the area of the four walls. Find the height of the room.


  1. 4 m

  2. 5 m

  3. 6 m

  4. 10 m


Solution

The correct option is A

4 m


Area of the floor =l×b=20×5=100 m2

Area of the roof =l×b=20×5=100 m2

Let the height of the room be h

Area of the walls =2(l×h)+2(b×h)

=2(20h+5h)=50h

50h=100+100

50h=200

h=20050=4 m

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
QuestionImage
QuestionImage
View More...



footer-image