1.

The perimeter of a rectangle is 320 cm. If the length of the rectangle is 90 cm, find the area enclosed by therectangle.How many tiles whose length and breadth are 13 cm and 7 cm respectively are needed to cover a rectangularregion whose length and breadth are 520 cm and 140 cm?The area of a field that is in the shape of a parallelogram is 504 sq.m. The base of the field is 24m, find thecorresponding altitude

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