Question

a metallic pipe is0.7 cm thick. inner radius of pipe is 3.5 cm and length is 5dm . find its total surface area

Answer 1

it's total surface area is 2453.88 cm square
TSA equal to outer CSA plus inner CSA plus area of two rims(area of rim equal to outer area - inner area)

Answer 2

Answer:

Step-by-step explanation:

We know,

Total surface area of pipe = 2π (r+ R ) ( h+ R - r)

or, Total surface area of pipe= 2×22/7(3.5+4.2)(50+4.2-3.5)

= 44/7 × 7.7 × 50.7

=2453.88cm^2

So the answer should be 2453.88cm^2