A circular wire of radius 56 cm is cut and bent in the form of a rectangle whose sides are in the ra...........

Quantitative Aptitude ( CCS) Mensuration 3D

A circular wire of radius 56 cm is cut and bent in the form of a rectangle whose sides are in the ratio of 6:5. The smaller side of the rectangle is ?

70cm

75cm

80cm

85cm

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Explanation:

Answer & Explanation
Answer – C.80cm
Explanation :
The perimeter of the circle, that is, the rectangle is,
P=2πr = 2 * 22/7 * 56 =16×22 cm.
Let us assume the actual length and breadth of the rectangle be, 6xand 5x
So perimeter will be,
P=2(6x+5x)=22x
16×22=22x
X=16.
The smaller side or breadth =5x=80cm