1. The difference between circumference and the radius of a circle is 111 cm. What is the area (in $$cm^{2}$$) of the circle?
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By: anil on 05 May 2019 02.28 am
Let radius of circle = $$r$$ cm => $$2pi r-r=111$$ => $$r(2 imesfrac{22}{7}-1)=111$$ => $$r imesfrac{44-7}{7}=111$$ => $$r=111 imesfrac{7}{37}=21$$ cm $$ herefore$$ Area of circle = $$pi r^2$$ = $$frac{22}{7} imes(21)^2=1386$$ $$cm^2$$ => Ans - (B)
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