Question

A hot water system consists of a cylindrical pipe of length 14m and diameter 5 .find the total radiating surface of hot water

Answer 1

We simply need to find curved surface area.
Curved surface area=2× pi × radius × height
=2×22/7×2.5×1400
=22000cm^2.
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Answer 2

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✴.Radius[R] = $\frac{diameter}{2} ={5}{2}$ =2.5Cm.

Length of the pipe = height =14m

Radiating surface = 2${\phi}$ rh

2${\phi}$ $\frac{22}{7}$ × 2.5 × 1400

=22000${cm}^3$

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