Question

A cylindrical piece of iron pipe is shown below. The wall of the pipe is 1.25 inch thick.

What is the approximate inside volume of the pipe?

a. 88 cubic inches
b. 49 cubic inches
c. 142 cubic inches
d. 154 cubic inches

Answer 1

Well if the wall of 1.25 inches thick, that gives the inside of the pipe an effective diameter of 6 - 2.5, yes?
So the diameter is 3.5 in, which makes the radius half of that which is 1.75 in.

To get the volume you multiply the area of the face (in this case a circle) by the depth.

Try it :)

Answer 2

@Directrix

Answer 3

According to the above post, you need to crank out:

V = π*r²*h
V = π*(1.75)²*16
V = ? @lowcard2 Crank that out and see what the inner volume is.

Answer 4

What did you get? @lowcard2

Answer 5

d?

Answer 6

That is what I got @lowcard2