A hollow cylindrical copper pipe is 21 dm long . Its outer and inner diameters are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe

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Solution

To find volume of hollow cylinder.
The formula is volume =
h = 21dm
Convert dm to cm so h = 2110 = 210cm
R = 10/2 = 5cm
r = 6/2 = 3cm
= 22/7
Therefore, Volume =
= 22(25-9)30 (cancelling 210 by 7)
=2216*30 = 10560cu.cm()

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A hollow cylindrical copper pipe is 21 dm long . Its outer and inner diameters are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe

To find volume of hollow cylinder. The formula is volume = h = 21dm Convert dm to cm so h = 21*10 = 210cm R = 10/2 = 5cm r = 6/2 = 3cm = 22/7 Therefore, Volume = = 22*(25-9)*30 (cancelling 210 by 7) =22*16*30 = 10560cu.cm() Read more on Brainly.in - https://brainly.in/question/4864#readmore

To find volume of hollow cylinder.
The formula is volume =
h = 21dm
Convert dm to cm so h = 2110 = 210cm
R = 10/2 = 5cm
r = 6/2 = 3cm
= 22/7
Therefore, Volume =
= 22(25-9)30 (cancelling 210 by 7)
=2216*30 = 10560cu.cm()

Read more on Brainly.in - https://brainly.in/question/4864#readmore