1 .	The ratio of the length and the breadth of a rectangle is 4 : 3 and the area of the rectangle is 1728 sq cm. What is the ratio of the breadth and the area of the rectangle ?
[ A ]    1 : 38 [ B ]    1 : 24 [ C ]    1 : 42 [ D ]    1 : 48
Answer : Option D Explanation : (4x) (3x) = 1728 ==>$x^2$= 144 ∴ x= 12 ==>le ngth = 48; breadth = 36 ∴ required ratio = $36\over36X48$ = 1 : 48
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