How would you measure the volume of a plastic pen? i’m thinking using the water displacement method but i’m not sure. in class we can only use length x widths height and water displacement.

The ways you could find the volume of a plastic pen could be:

Explanation:

The two suggestions that I give you can apply to find the volume of a plastic pen, with the first method you only have to immerse the pen inside a volumetric container with a certain amount of water, then you look at the amount of water that increased in the container and that increase with respect to the initial value is the volume of the cylinder.

In the second way that I give you, you must divide the pencil into known figures to which you will calculate the volume separately, if it is a common pencil its initial part (where the tip is) you can resemble a cone and the body to a cylinder , so you would use the formulas:

Where:

PI = 3.1416 approximately.

r = Radius.

h = Height.

With which you would have to measure with a ruler the values requested by the formulas and replace to calculate them.