Question

find the total surface area of an open pipe of lenght 50cm , external diameter 20cm, internal diameter 6cm

Answer 1

Step-by-step explanation:

Given, a pipe with inner diameter 6 cm, outer diameter 20 cm, length 50 cm.

Inner diameter =6 cm, inner radius =3 cm ( Diameter =2 × radius)

Outer diameter=20 cm, outer radius =10 cm

Total surface area of pipe = Curved surface area of inner pipe + curved surface area of outer pipe + Area of top circular portion

=2πrh+2πRh+2π(R

2

−r

2

)

=2×

7

22

×3×50+2×

7

22

×10×50+2×

7

22

×91

=942.85+3142.85+572

=4657.7

hope this helpz....

have a NYC day....

do follow me❤❤

keep smiling☺☺✌✌

Answer 2

Above is your answer mark above as brainliest