Question

In a hot water heating system, ther is a cylindricl pipe of lenght 28 m and diameter 5 cm. Find the total rafdiating surface in the system

Answer 1

Here is your answer. Mark it as brilliantest

Answer 2

L= 28m= 2800cm
d= 5 cm.
r= 5/2 cm
c.s.a = 2 π r h
= 2× 22/7×5/2×2800
=22×5×400
= 22×2000
= 44000 cm^2.