# The length, breadth and height of the room are in the ratio 3:2:1. The breadth and height of the room are halved and length of the room is doubled. The area of the four walls of the room will (a) Decrease by 13.64%                             (b) Decrease by 15% (c) Decrease by 18.75%                             (d) Decrease by 30%

## Question ID - 50058 :- The length, breadth and height of the room are in the ratio 3:2:1. The breadth and height of the room are halved and length of the room is doubled. The area of the four walls of the room will (a) Decrease by 13.64%                             (b) Decrease by 15% (c) Decrease by 18.75%                             (d) Decrease by 30%

3537

Length = breadth = height =

Area of 4 walls =

New length = new breadth =  new height =.

New area of the 4 walls =

Decrease in area =

Decrease % =

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An infinitely long current carrying wire and a small current carrying loop are in the place of the paper as shown.  The radius of the loop is a and distance of its centre from the wire is d(d a). if the loop applies a force F on the wire then:

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