Sunday 26 February 2017

Question of the day 25-2-2017

A circular wire of radius 42 cm is cut and bent into the form of a rectangle whose sides are in the ratio of 6:5. The smaller side of the rectangle is:


a)30 cm
b)60 cm
c)72 cm
d)132 cm
e)None.
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1 comment:

  1. Bhaskar Reddy26 February 2017 at 04:38

    Answer: Option b
    Explanation:
    Length of wire= circumference of circle of radius 42cm= (2* 22/7* 42)=264cm.
    Therefore, perimeter of rectangle= 264 cm.
    Let, length= 6x cm & breadth= 5x cm.
    Therefore, 2 (6x+5x)= 264 or x=12.
    Therefore, smaller side= 60 cm

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