Hey!
The formula for finding volume of a cylinder is π · r² · h
π is equal to 3.14
The radius is 0.5 inches. 1.5² = 1.5 × 1.5 = 2.25
Multiply the radius² by π and divide that amount by 123 to find the height. You have to do this because if you wan to make the height the subject, then you have to multiply the radius² and 3.14(π) and divide that by the volume.
![2.25 * 3.14 = 7.065 \\ 123 / 7.065 = 17.41](https://img.qammunity.org/2019/formulas/mathematics/middle-school/qdwr6cc3hn67yu5qbv43cyu2dhvcrnhs3b.png)
That means your answer is 17.41 in
Good luck and hope this helps!