Question 124207
A metal pipe is 77 cm long.The inner diameter of a cross-section is 4 cm, the outer diameter being 4.8 cm. Find its inner curved surface area 
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No one seems to want this one, here's my effort, for what it's worth
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The inner curved surface area would be the inner circumference times the length
A = pi*4*77
A = 967.6 sq/cm
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Hope this helps you