Question:
A hollow iron pipe 25 cm long has an exterior diameter equal to 32 cm. If the thickness of the pipe is 1cm, find the whole surface area of the pipe [ Take pi= 22/7 ].
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Answer:
A hollow iron pipe 25 cm long has an exterior diameter equal to 32 cm. If the thickness of the pipe is 1cm, find the whole surface area of the
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Step-by-step explanation:
h=25 CM
D =32. R = 32/2. R =16 r= 16-1 =15
Total surface area of pipe
= 2Rh + 2rh + 2(R2 - r2)
= 2pih(R + r) + 2[(R + r) (R - r)]
= 2pi(R + r) (h + R - r)
2 *22/7*(16+15)(25+16-15)
2*22/7*31*26=5066.28
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