1. If the area of a semi-circle is $$1925 cm^2$$, then find its radius (in cm).
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By: anil on 05 May 2019 02.04 am
Let radius of the semi-circle = $$r$$ cm => Area = $$frac{1}{2} imespi r^2$$=1925$$ => $$frac{1}{2} imesfrac{22}{7} imes r^2=1925$$ => $$r^2=1925 imesfrac{7}{11}=1225$$ => $$r=sqrt{1225}=35$$ cm => Ans - (D)
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