hello metal pipe is 63 cm long the inner diameter of cross section 84 cm and the outer diameter it 4.8 cm find the total surface area of the pipe.
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The outer radius is 4.8cm
The height of pipe 63cm
The surface area of pipe is 2πrh
2 722 ×4.8×63
18×22×4.8=1900.8cm 2
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