Question

. A rectangular piece of paper having length 4.4 cm and breadth 1.5 cm is to be rolled along its length to form a right circular cylinder. Find the height and the volume of the right circular cylinder.​

Answer 1

Answer:

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Answer 2

According to the given question we have to find the volume and the height of the right circular cylinder,

Given that:- Length $=4.4cm$

                    Breadth $=1.5cm$

As we know that,

Volume of cylinder $=\pi r^2 h$

For that, we need to find the value of radius,

Since, Circumference of circle $=2\pi r$

So, $2\pi r=4.4$

$=>\pi r=\frac{4.4}{2}$

$=>\pi r=2.2$

$=>r=2.2\times \frac{7}{22}$

$=>r=0.7cm$

So, the height of the cylinder is $1.5cm.$

As we have the formula of

Volume of cylinder $=\pi r^2 h$

$=>\frac{22}{7}\times 0.7\times \times 1.5$

$=>2.2\times 1.05\\=>2.310cm^3$

Hence, the height and the volume of cylinder is $1.5 cm$ and $2.310cm^3$ respectively.