Area Problems
The cross section of a canal is a trapezium in shape . If the canal is a trapezium in shape. If the canal is 10 meters wide at the top and 6 meters wide at bottom and the area of cross section is 640 sq. meters The depth of canal is?

160 meters
40 meters
384 meters
80 meters

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Area Problems
The Different between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m, then its area is

2420 m2
2480 m2
2520 m2
None of these

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