The length, breadth, and height of a room are in the ratio 3:2:1. If the breadth and height are halved, while the length is doubled, then the total area of the four walls of the room will:

The length, breadth, and height of a room are in the ratio 3:2:1. If t

1.	The length, breadth, and height of a room are in the ratio 3:2:1. If the breadth and height are halved, while the length is doubled, then the total area of the four walls of the room will:
Answer» If the breadth and height are halved, while the length is doubled, then the total area of the four walls of the room willdecreaseby 30%. The area of the room is calculatedby the concept of the lateral surface areaof the cuboid.