Area Problems
If the radius of a circle is decreased by 50% , find the percentage decrease in its area.

35%
65%
75%
25%

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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. 192
Rs. 298
Rs. 384
Rs. 96

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