1.

If the volume of an cylinder is 700 cubic centimeters and the area of the base is 100 square centimeters, what is the length of the cylinder?*1️⃣ 70 cm2️⃣ 7 cm3️⃣ 700 cm4️⃣ 7 sqcm​

Answer»

Given : Volume of an CYLINDER is 700 cm³ and the AREA of the base is 100 cm² .

Need To Find ; The Length or HEIGHT of Cylinder .

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❍ Let's CONSIDER the Length or Height of Cylinder is h cm .

\dag\frak{\underline { As,\;We\:know\:that \::}}\\

\star\boxed {\pink{\sf{ Curved \:Surface \:area\:_{(Cylinder)} = \pi r^{2} h }}}\\\\

And ,

\star\boxed {\pink{\sf{ \:Area\:_{(Circle)} = \pi r^{2}  }}}\\\\

Where ,

  • r is the Radius of Circle and Cylinder & h is the Height or Length of Cylinder & \pi =\dfrac{22}{7}

Given that ,

  • Area of Base Circle of Cylinder is 100 cm²

Or ,

  • \pi r² = 100 cm²

⠀⠀⠀⠀⠀⠀\underline {\bf{\star\:Now \: By \: Substituting \: the \: known\: Values \::}}\\

\qquad \quad :\implies\sf{ 700 = \pi r^{2} h }\\\\

  • \pi r² = 100 cm²

\qquad \quad :\implies\sf{ 700 = 100( h) }\\\\

\qquad \quad :\implies\sf{ \cancel {\dfrac{700}{100}} =  h }\\\\

⠀⠀⠀⠀⠀\underline {\boxed{\pink{ \mathrm {  h = 7\: cm}}}}\:\bf{\bigstar}\\

Therefore,

⠀⠀⠀⠀⠀\therefore {\underline{ \mathrm { Hence,\:Length \:of\:Cylinder \:is\:\bf{7\: cm}}}}\\

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