IBPS Government Jobs Exams Numerical Ability Geometry

If Length of a rectangular field is increased by 21 metres and breadth is decreased by 9 metres, area of the field remains unchanged. If length be decreased by 21 metres and breadth be increased by 15 metres, again area remains unchanged. Find the length of diagonal of the rectangle. (A) 90 m (B) 64 m (C) 95.3 m (D) 64.8 m
(E) 78 m

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IBPS Other Question
The weight of A is 12 kg less than weight of B and weight of B is 18 kg more than weight of C. The average weight of A, B & C is 26 kg. If the ratio of weight of B to that of D is 2:3, then find the weight of D.
A)54 kg B) 60 kg C) 45 kg D) 48 kg E) None of these The perimeter of a square is equal to twice the perimeter of a rectangle of length 8 cm and breadth 7 cm. What is the circumference of a semicircle whose diameter is equal to the side of the square ?
(A) 38.57 cm (B) 23.57 cm (C) 42.46 cm (D) 47.47 cm (E) 35.57 cm