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[dazza]

:?
A cylindricalo copper pipe has insulation in the form of a foam tube placed around the outside of it. the pipe has external dimensions of 10cm diameter and 10 m lenght. The foam tubing is 25mm thick

a) Find the cross sectional area of the pipe
b) Find the cross sectional area of insulation
c) Find the volume of the insulation over the 10 m length

Thank u

 

[tkhunny]

:?
A cylindricalo copper pipe has insulation in the form of a foam tube placed around the outside of it. the pipe has external dimensions of 10cm diameter and 10 m lenght. The foam tubing is 25mm thick

a) Find the cross sectional area of the pipe
b) Find the cross sectional area of insulation
c) Find the volume of the insulation over the 10 m length

Thank u

You are not showing your work. We cannot be of much assistance unless we know how to help you.

Do you know how to compute the volume of a right circular cyllinder? That will solve this problem in its entirety.

 

[stapel]

a) They've given you the diameter; from this, find the radius, and plug into the "area" formula for a circle.

b) Add the thickness of the foam to the radius, so you now have a bigger circle. Find the area. Subtract out the area that stands for the pipe, leaving the area of the insulation.

c) Multiply the area by the height. (Note: You will need to convert the height to millimeters, or else have done the above calculations in meters.)

If you get stuck, please reply showing how far you have gotten. Thank you.

Eliz.