Math, asked by Anonymous, 3 months ago

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 ].​

Answers

Answered by Anonymous
9

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

Answered by vivekanandrai138
2

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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