about area of a circle
Asked by ishmeet kaur Sidana | 8th Jan, 2014, 09:06: PM
Expert Answer:
Let 'r' be the radius of the circle and its area = 
When the radius is decreased by 'N', the new radius of the circle = (r - N).
Therefore the area of the new circle = 
.
But it is given as half of the old area.
That is, 
.Answered by Vimala Ramamurthy | 9th Jan, 2014, 09:43: AM
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