Question

Find volume cylinder diameter=42cm and height =40cm

Answer 1

Answer:

55440

Step-by-step explanation:

volume = πr²h

= 22/7*21²*40

=22/7*441*40

=22*63*40

=55440

So,the estimated anwer is 55440

Answer 2

✬ The volume of cylinder is 55440 cm³✬

Step-by-step explanation:

$\\ \bf{Given} \left \{{{ \sf{radius = \frac{d}{2} = \frac{ \cancel{42}}{ \cancel{2}} = 21 \: cm }} \atop{ \sf{height = 40 \: cm}}} \right.$

To find: Volume of cylinder

Required Formula:

• Volume of cylinder = πr²h

Solution:

Where,

• π = 22/7
• r = 21
• h = 40

$\\ :\implies\sf{V = \frac{22}{7}\times (21)^2\times 40 }\\ </p><p> \\ :\implies\sf{V = \frac{22}{ \cancel{7}} \times \cancel{21} \times 21 \times 40} \\ \\ :\implies\sf{V =22 \times 3 \times 21 \times 40} \\ \\ :\implies\sf{V =66 \times 840} \\ \\ :\implies \underbrace{ \boxed{\mathfrak{V =55440 \: \: {cm}^{3} }}} \: \blue{ \bigstar}$

• Hence,The Volume of cylinder is 55,440 cm³.