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OM KANADE from Euro School, Bengaluru
Subject :IMO    Class : Class 8

A wire of length l units is bent to form a circle. Then ratio of radius of the circle to the area of the circle so formed is _____.

A2π : l
Bl : π
C2 : l
D4 : 3l


Ans 1:

Omayr from Army Public School Yol Cantt, Dharamshala
Class : Class 8

Ans 2:

Kartik Jambur from Delhi Public School East, Bengaluru
Class : Class 8
Answer is C. Circumference of the circle will be equal to l (the wire forms the circle) 2 * 22/7 * r = l , r = l/44/7 Area = 22/7 * r * r = 22/7 * l/44/7 * l/44/7 = l*l/4*44/7 Therefore radius : area = l/44/7 : l*l/4*44/7 = 2 : l Hope it helped!

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