1. The area of a circle is $$616 cm^2$$. 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 = $$pi r^2=616$$ => $$frac{22}{7} imes r^2=616$$ => $$r^2=616 imesfrac{7}{22}$$ => $$r=sqrt{28 imes7}=2 imes7=14$$ cm => Ans - (A)
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