You could, but if you do, you will have to divide the circumference by π, and that's an irrational number. And, think of placing the pipe in a rectangular box with two sides the same length as the diameter of the pipe. It fits, and it makes the question much, much simpler. (Doesn't it? Sorry if my answer's too long.)
They can measure the circumference of the pipe and divide it by pi or 3.14 to get an approximate answer
To find the outside diameter of a pipe with a circumference of 870 mm, you can use the formula for circumference, which is C = πd, where C is the circumference and d is the diameter. Rearranging the formula gives d = C / π. Substituting the values, the diameter is approximately 870 mm / 3.14, which is about 277.5 mm. Therefore, the outside diameter of the pipe is approximately 277.5 mm.
diameter times 3.14159
The pipe will have an outside diameter of 1.5+.25+.25 = 2". A pipe with an outside diameter of 2" has an outside circumference of 2"*Pi. 2"*3.142 ~= 6.284" or about 6 1/4"
Since the circumference of a circle is equal to its diameter times pi, the o.d. of a pipe is equal to its exterior circumference divided by pi.
They can measure the circumference of the pipe and divide it by pi or 3.14 to get an approximate answer
Measure the inside diameter and multiply it by 3.14159 (pi)
31.4159inches
circumference = 2*pi*radius or pi*diameter
Circumference divided by pi equals diameter. Pi X Diameter=Circumference.
diameter times 3.14159
The pipe will have an outside diameter of 1.5+.25+.25 = 2". A pipe with an outside diameter of 2" has an outside circumference of 2"*Pi. 2"*3.142 ~= 6.284" or about 6 1/4"
to divide a pipe into sections measure the outside diameter then multiply by 3.142 this will give you the circumference divide this number by how many sections you require place a mark anywhere on the on the pipe then measure from that mark your answer The best method for calculating the cross section area of a round pipe or tube is to use the following formula: ((D-W)*W)*PI Where as D= Outside Diameter Measurement W= Wall Thickness PI= 3.1416 that is circumference. The answer I have is: diameter squared x .7854 Ex. 3inch pipe (inside diameter) 3 x 3 x .7854= 7.0686
The answer depends on what the "36 inch" measures: inside circumference, radius, diameter?
Since the circumference of a circle is equal to its diameter times pi, the o.d. of a pipe is equal to its exterior circumference divided by pi.
"4 inch" would usually refer to the diameter in such cases. You can multiply that by pi (which is about 3.1416) to get the circumference.
The circumference of 12-inch pipe is: 37.7 inches. (C = d x Pi)Since 12 inch pipe is a nominal size and its outside diameter is 12.75 inches, the circumference of 12 inch pipe actually is : 40.035 inches