A hollow cylinder is one which is empty from inside and has some difference between the internal and external radius. We see hollow cylinders every day in our day to day lives. Tubes, circular buildings, straws these are all examples of a hollow cylinder.
Area of a Hollow Cylinder:
2π ( r1 + r2)( r1 – r2 +h)
Defining Terms:
Let ‘
\(\begin{array}{l}\mathbf{r_{1}}\end{array} \)
‘ be the outer radius of the given cylinder and ‘
\(\begin{array}{l}\mathbf{r_{2}}\end{array} \)
‘ be its inner radius and ‘
\(\begin{array}{l}\mathbf{h}\end{array} \)
‘ be its height.
‘
\(\begin{array}{l}\mathbf{C_{1}}\end{array} \)
‘ be the outer circumference and ‘
\(\begin{array}{l}\mathbf{C_{2}}\end{array} \)
‘ be the inner circumference.
L1 and L2 be the outer and inner surface areas respectively.
I have been physically visited by your expert about my children education through byjus on 23/03/2020 at 12:00 pm at my home. But there were many incidents occured after this date. I unfortunatelly did not pik your sides call. Please call me, as i want to discuss purchasing your tab as my children are in 5th and 9th class.
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I have been physically visited by your expert about my children education through byjus on 23/03/2020 at 12:00 pm at my home. But there were many incidents occured after this date. I unfortunatelly did not pik your sides call. Please call me, as i want to discuss purchasing your tab as my children are in 5th and 9th class.
With regards
Sudesh
Kabir nagar
Delhi 110094