Question

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 ].​

Answer 1

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

Answer 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

answer