Area Problems
The length of a rectangle is double while its breadth is halved. What is the percentage change in area?

No change
50
75
None of these

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Area Problems
The length of a rectangle is twice its breadth. If its length is decreased half of the 10 cm and the breadth is increased by half of the 10 cm cm, the area of the rectangle is increased by 5 sq cm, more than 70 sq cm. Find the length of the rectangle.

40 cm
21 cm
30 cm
45 cm

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