The perimeter of a rectangle having area equal to 144cm and sides in the ratio 4:9 is.
A52cm
B56cm
C60cm
D64cm
A52cm
B56cm
C60cm
D64cm
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The length and breadth of a rectangular field are in the ratio 7 : 4. A path 4 m wide running all around outside has an area of 416m2. The breadth (in m) of the field is