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A metal pipe in 77 cm long. If the inner...

A metal pipe in 77 cm long. If the inner diameter ofa cross section is 4 cm and the outer diameter being 4.4 cm. Then, its outer curved surface area is

A

`1164.8 cm^(2)`

B

`1440.8 cm^(2)`

C

`123.8 cm^(2)`

D

`1064.8 cm^(2)`

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The correct Answer is:
D
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