The formula to calculate the Test Tube Volume (TTV) is:
\[ TTV = \pi \times tr^2 \times h \]
Where:
Let's say the test tube radius (tr) is 1 inch and the height (h) is 5 inches. Using the formula:
\[ TTV = \pi \times 1^2 \times 5 \]
We get:
\[ TTV = \pi \times 5 \approx 15.71 \text{ cubic inches} \]
So, the test tube volume is approximately 15.71 cubic inches.