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.

Explanation

To find the total radiating surface area of a cylindrical pipe, we can use the formula for the curved surface area of a cylinder, which is given by:

\[ \text{Curved Surface Area} = 2 \pi r h \]

where:
- \( r \) is the radius of the cylinder,
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