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In a Hot Water Heating System, There is a Cylindrical Pipe of Length 28 m and Diameter 5 cm. Find the Total Radiating Surface in the System. - Mathematics

In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5 cm. Find the total radiating surface in the system.

`["Assume "pi=22/7]`

 

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Solution

Height (h) of cylindrical pipe = Length of cylindrical pipe = 28 m

Radius (r) of circular end of pipe = (5/2) = 2.5 cm = 0.025 m

CSA of cylindrical pipe = 2πrh

`=(2xx22/7xx0.025xx28)m^2`

= 4.4m2

The area of the radiating surface of the system is 4.4 m2.

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APPEARS IN

NCERT Class 9 Mathematics Textbook
Chapter 13 Surface Area and Volumes
Exercise 13.2 | Q 8 | Page 217
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