Each side of a square field measures 21 m. Adjacent to this field, there is a rectangular field having its sides in the ratio 4 : 3. If the perimeters of both the fields are equal, find the dimensions of the rectangular field.
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Solution
Side of the square field = 21m
Perimeter of the square field = (421) m
= 84 m
Let the length and the breadth of the rectangular field be 4x and 3x, respectively.
Perimeter of the rectangular field = 2(4x + 3x) = 14x
Perimeter of the rectangular field = Perimeter of the square field