To calculate the weight of a tube:
\[ W = \pi \times (r2 - r1)^2 \times h \times d \]
Where:
The weight of a tube is typically used to describe the total weight of a steel pipe.
Let's assume the following values:
Step 1: Subtract the inside radius from the outside radius and square the result:
\[ (2 - 1)^2 = 1^2 = 1 \]
Step 2: Multiply by π:
\[ \pi \times 1 = 3.14159 \]
Step 3: Multiply by the length:
\[ 3.14159 \times 10 = 31.4159 \]
Step 4: Multiply by the density:
\[ 31.4159 \times 0.285 = 8.96 \text{ lbs} \]