Question

A metallic pipe is 0.7 cm thick .Inner radius of the pipe is 3.5 cm and length is 5dm .Find it's total surface area?

Answer 1

that would be the area of the inner cylinder, plus the area of the outer cylinder, plus the area of the two rings at the end. So, if
R = outer radius
r = inner radius
h = length of pipe

the total area is

2πrh + 2πRh + π(R^2-r^2)
= 2πh(r+R) + π(R+r)(R-r)
= π(R+r)(2h+R-r)

Answer 2

Total surface area = inner curved surface area + outer curved surface area + area of 2 rings

We will consider ,
R=outer curved surface area
r=inner curved surface area
h=given lenght

=2πRh + 2πrh + πR^2 + πr^2
=π(r +R )+(2h + R-r )
After solving with values we will get the total surface area as 253.88 cm ^2

Answer 3

In above sum R = outer radius
r= inner radius
Sorry for the mistake

Answer 4

ooo its so nice it help me a lot it is very helpful to me thanku very very much

Answer 5

Ma
chod

Answer 6

Wrong answer...correct answer is 2453.88cm^2

Answer 7

Pls put the value then solve and tell me what answer u get and answer is 2453.88cm^2

Answer 8

Pura solve kijiye

Answer 9

Bad

Answer 10

You have not solve correctly.Also,explain your answers.