The external diameter of an iron pipe is 25cm
Asked by admin @ in Math viewed by 453 People
The exterior diameter of an iron pipe is 25 cm and it is one cm thick. Find the whole surface area of the pipe it is 21cm long
Answered by admin @
total surface area is the sum of the inner curved surface area and outer curved surface area of the iron pipe
outer diameter=25cm
outer radius=12.5cm
inner radius=(12.5-1)cm=11.5cm
now the total area is...
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