1. Find the total surface area $$(in cm^2)$$ of a right circular cylinder of diameter 7 cm and height 6 cm.
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By: anil on 05 May 2019 02.04 am
Height of cylinder, $$h=6$$ cm and radius, $$r=frac{7}{2}=3.5$$ cm Total surface area of cylinder = $$2pi r(r+h)$$ = $$2 imesfrac{22}{7} imesfrac{7}{2} imes(3.5+6)$$ = $$22 imes9.5=209$$ $$cm^2$$ => Ans - (B)
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