Math, asked by TbiaSamishta, 1 year ago

The radius of base of a cylinder is 3.5 cm and height is 40 cm, then find the curved surface area of cylinder.

Answers

Answered by Anonymous
5

Heya !!



Here is your answer...



Given, r = 3.5 cm and h = 40 cm



Now,



CSA  \: of  \: cylinder = 2\pi rh



 =  > 2 \times  \frac{22}{7}  \times 3.5 \times 40



 =  > 880 \:  {cm}^{2}



Hope it helps..

Answered by Priyanshulohani
1

\large\underline\pink{Given:-}

Cylinder of Height = 4 cm

Cylinder of Radius = 3.5 cm

\large\underline\pink{To find:-}

Fine the ratio of the TSA and CSA of a cylinder ....?

\large\underline\pink{Solutions:-}

\: \: \: \: \:  \therefore \: \: Total \: \: surface \: \: area \: \: cylinder \: \: = \: \: {2} \: \pi \: r \: {({r} \: + \: {h})}

\: \: \: \: \: \leadsto \: \: {2} \: \times \: \frac{22}{7} \: \times \: {3.5} \: {({3.5} \: + \: {4})}

\: \: \: \: \: \leadsto \: \: {2} \: \times \: \frac{22}{7} \: \times \: {3.5} \: \times \: {7.5}

\: \: \: \: \: \leadsto \: \: {2} \: \times \: {22} \: \times \: {0.5} \: \times \: {7.5}

\: \: \: \: \: \leadsto \: \: {44} \: \times \: {3.75}

\: \: \: \: \: \leadsto \: \: {165} \: {cm}^{2}

\: \: \: \: \:  \therefore \: \: Curved \: \: surface \: \: area \: \: of Cylinder \: \: = \: \: {2} \: \pi \: r \: h

\: \: \: \: \:  \leadsto \: \: {2} \: \times \: \frac{22}{7} \: \times \: {3.5} \: \times \: {4}

\: \: \: \: \:  \leadsto \: \: {2} \: \times \: {22} \: \times \: {0.5} \: \times \: {4}

\: \: \: \: \:  \leadsto \: \: {44} \:  \times \: {2}

\: \: \: \: \:  \leadsto \: \: {88} \: {cm}^{2}

\: \: \: \: \:  Ratio \: \: = \: \: \frac{TSA \: \: of \: \: Cylinder}{CSA \: \: of \: \: Cylinder}

\: \: \: \: \:  \leadsto \: \: \frac{165}{88}

\: \: \: \: \: \: \: Hence, \\ \: \:\therefore \: \: The \: \: ratio \: \: of \: \: the \: \: TSA \: \: and \: \: CSA \: \: of \: \: a \: \: cylinder \: \: {165} \: : \: {88}

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