Math, asked by missbrainly02, 3 months ago

tex]{\huge{\underline{\underline{\mathfrak{QUESTION}}}}}[/tex]

The volume of a cylinder is 6538 cubic centimetres and its height is 28 cm. find its radius and the curved surface area.

Answers

Answered by itsAngelgirl
14

{\huge{\underline{\underline{\mathfrak{QUESTION}}}}}

The volume of a cylinder is 6538 cubic centimetres and its height is 28 cm. find its radius and the curved surface area.

{\huge{\underline{\underline{\mathbb{ANSWER}}}}}

{\huge{\underline{\mathbb{GIVEN}}}}

\longmapsto\sf Volume\ of\ cylinder\ =\ 6538\  {cm}^{3}

\longmapsto\sf Height\ of\ cylinder\ =\ 28 cm

{\huge{\underline{\mathbb{TO\FIND}}}}

\longmapsto\sf Radius\ of\ cylinder\ =\ ??

\longmapsto\sf Curved\ Surface\ Area\ =\ ???

{\huge{\underline{\mathbb{FORMULA\ USED}}}}

Volume\ of\ cylinder\ =\pi {r}^{2}h

C.S.A.\ of\ Cylinder\ =2\pi rh

{\huge{\underline{\mathbb{SOLUTION}}}}

Let the radius be r m

According\ to\ given\ conditions

Volume\ of\ cylinder\=6538{cm}^{3}

=>\pi {r}^{2}h=6538

=>{r}^{2}=\frac{6538×7}{22×28}

=>r=\sqrt{72.25}

Hence, radius= \boxed{8.5}

Than, Curved surface area =2\pi rh

Answered by Anonymous
2

Step-by-step explanation:

Let the radius be r m

According\ to\ given\ conditionsAccording to given conditions

Volume\ of\ cylinder\=6538{cm}^{3}

= > \pi {r}^{2}h=6538=>πr

2

h=6538

= > {r}^{2}=\frac{6538×7}{22×28}=>r

2

=

22×28

6538×7

= > r=\sqrt{72.25}=>r=

72.25

Hence, radius= \boxed{8.5}

8.5

Than, Curved surface area =2\pi rh

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