1. What is the area (in sq cm) of a circle whose circumference is 26.4 cm?





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  • By: anil on 05 May 2019 01.45 am
    $$2pi r = 26.4$$ $$2 imes frac{22}{7} imes r=26.4$$ $$r = 4.2$$ area = $$pi r^{2}$$ = $$frac{22}{7}(4.2)^{2}$$ = $$55.44 cm^{2}$$ So the answer is option A.
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