1. The area of a circle is 38.5 $$cm^2$$ . Find its radius (in cm).
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By: anil on 05 May 2019 02.04 am
Let the radius of circle = $$r$$ cm => Area = $$pi r^2=38.5$$ => $$frac{22}{7} imes r^2=38.5$$ => $$r^2=38.5 imesfrac{7}{22}=12.25$$ => $$r=sqrt{12.25}=3.5$$ cm => Ans - (C)
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