Area Problems
If the radius of a circle be reduced by 50%. Its area is reduced by?

34.5%
39.5%
65.5%
31.5%

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Area Problems
The cost of papering the four walls of a room is Rs. 48. Each one of length, breadth and height of another room is double that of this room.The cost of papering the walls of the new room is?

Rs. 96
Rs. 384
Rs. 192
Rs. 298

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