Math, asked by savleen3040, 3 months ago

Find the volume of a cube whose lateral surface area is 196m2

Answers

Answered by Anonymous
13

For a Cube -

 \large \underline \bold{Given :-}

\: \: \: \sf{Lateral \: Surface \: Area = 196 \: m^{2}}

 \large \underline \bold{To \: Find :-}

\: \: \: \: \: \: \sf{Volume \: of \: Cube = ?}

 \large \underline \bold{Using \: Formula :-}

\: \: \: \sf{Lateral \: Surface \: Area = 4a^{2}}

\: \: \: \: \: \: \: \: \: \: \: \sf{Volume \: of \: Cube = a^{3}}

Where ,

\: \: \: \: \: \: \: \: \: \sf{a = side \: of \: Cube}

 \large \underline \bold{Solution :-}

As We given -

\:  \small \bold{L.S.A. = 196 \: m^{2}}

\: \: \: \: \: \: \: \sf{4a^{2} = 196}

\: \: \: \: \: \: \: \: \: \sf{a^{2} =\dfrac{196}{4}}

\: \: \: \: \: \: \: \: \: \sf{a^{2} = 49}

\: \: \: \: \: \: \: \: \: \: \sf{a =\sqrt{49}}

\: \: \: \: \: \: \: \: \: \:  \small \bold{a = 7 \: m}

Now ,

 \small \bold{Volume \: of \: Cube = a^{3}}

\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf{V = (7)^{3}}

\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:   \small \bold{V = 343 \: m^{3}}

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