find the volume of each solid. if necessary, round to the nearest tenth.
cylinder: radius 4.2cm, height 9cm.
pi r^2 h
3.14 * 4.2 * 4.2 * 9
which one is the answer???
what do i have to do?
You have to decide you're going to learn how to do algebra.
i want too but its difficult:(
To find the volume of a cylinder, you can use the formula:
Volume = π * radius^2 * height
In this case, the radius of the cylinder is given as 4.2 cm and the height is 9 cm.
Substituting the given values in the formula, we get:
Volume = π * (4.2 cm)^2 * 9 cm
Now we can calculate the volume using the following steps:
1. Square the radius:
4.2 cm * 4.2 cm = 17.64 cm^2
2. Multiply the squared radius by the height:
17.64 cm^2 * 9 cm = 158.76 cm^3
3. Finally, round the volume to the nearest tenth:
Volume ≈ 158.8 cm^3
Therefore, the volume of the cylinder is approximately 158.8 cubic centimeters.