Answer:
1. 150.8 in³ (rounded to tenths place) or 48π (in terms of Pi) depending on whether your teacher wants the answer in terms of Pi or not.
2. 113.1 in³ (rounded to tenths place) or 36π (in terms of Pi)
Explanation:
The formula for the volume of a cylinder:
height of the cylinder X Pi X (radius of the cylinder)²
1. 4² is 16, 16*3 is 48, times Pi is 48π or 150.796447.
2. 3² is 9, 9*4 is 36, times Pi is 36π or 113.097336
Let me know if you need help rounding to hundredths or thousandths place.