Question

volume of cylinders radius 7 cm length 12 cm​

Answer 1

Given:

• Radius of the cylinder is 7cm.
• Height of the cylinder is 12cm.

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To find:

• Volume of the cylinder.

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Solution:

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We have radius and height of the cylinder i.e., 7cm and 12cm respectively.

We need to calculate the volume of the cylinder, formula is given by

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$\: \: \: \: \: \: \: \: \star\bf\: \: \: {Volume = \pi r^2 h}$

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$\tt:\implies\: \: \: \: \: \: \: \: {Volume = \dfrac{22}{7} \times 7 \times 7 \times 12}$

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$\tt:\implies\: \: \: \: \: \: \: \: {Volume = 22 \times 7 \times 12}$

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$\tt:\implies\: \: \: \: \: \: \: \: {Volume = 22 \times 84}$

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$\tt:\implies\: \: \: \: \: \: \: \: {Volume = 1,848}$

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Hence,

• Volume of the cylinder is 1,848 cm³.

Answer 2

Given : Radius and height of a cylinder are 7cm and 12cm.

To Find : Volume of the cylinder.

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Here

$\: \:$

• Radius of the cylinder = 7cm
• Height of the cylinder = 12cm

$\:$

As we know that :

$\:$

$\underline{\boxed{\sf\purple{\bigstar \: volume \: of \: a \: cylinder \: = \bold{\pi}r {}^{2} h}}}$

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Where

$\: \:$

• r denotes radius of the cylinder.
• h denotes height of the cylinder.

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Now we'll put the given values in the formula and solve this.

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Put the values and solve -

$\:$

$\sf:\implies \: volume \: of \: the \: cylinder \: = \bold{\pi} {r}^{2} h \\ \\ \\ \sf:\implies \: volume \: of \: the \: cylinder \: = \frac{22}{\cancel{7}} \times \cancel7 \times 7 \times 12 \\ \\ \\ \sf:\implies \: volume \: of \: the \: cylinder \: = 22 \times 7 \times 12 \\ \\ \\ \sf:\implies \: volume \: of \: the \: cylinder \: = \underline{\boxed{\sf\purple{1848cm {}^{3} }}}\bigstar \\ \\ \\ \\ \sf\therefore{\underline{Hence, \: the \: volume \: of \: the \: cylinder \: is \: \bold{1848 {}^{3}. }}}$