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A metal pipe is 77 cm long, the inner diameter of the cross- section is 4 cm and the outer diameter is 4.8 cm. find the

1. inner curved surface area
2. outer curved surface area
3. total surface area


1.inner curved surface area(a)=rh+r2
2.outer curved surface area(b)=
3.total surface area= a + b
1 5 1
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