VOLUME OF A PRISM
When you want to find the area of a 2D shape, the area is measured in units squared. When you want to find the volume of a 3D shape, you measure it in units cubed. Here you will learn how to calculate the amount of space in a 3D shape, or the volume of a 3D shape.
Tops and Bases
One of the most important things to know in volume are tops and bases. You will know why later, but for now, lets focus on what they are.
A top and base are not figured out by looking at the way is it placed on a table or is not based on what looks like the top and base, as all shapes can be rotated. You can figure out which face is a top and base if you know that the top is congruent and parallel to the base.
A top and base are not figured out by looking at the way is it placed on a table or is not based on what looks like the top and base, as all shapes can be rotated. You can figure out which face is a top and base if you know that the top is congruent and parallel to the base.
Finding Volume
The formula for finding the volume of a 3D shape is: Area of base x Height. As you can see, the word "base" starts with a lowercase and the word "Height" starts with a uppercase letter. This is because when a word or letter is uppercase, it is referring to the 3D shape, but when it is lowercase, it is referring to the face of a 3D shape, which is 2D.
Imagine a cylinder. Now, picture the base. How many times can you stack the base before you get to the top? By multiplying the area of the base by the height of the 3D shape, you can see how many times the base is being stacked before it reaches the top.
Imagine a cylinder. Now, picture the base. How many times can you stack the base before you get to the top? By multiplying the area of the base by the height of the 3D shape, you can see how many times the base is being stacked before it reaches the top.
Remember to add units and show all your work when doing this on paper.
Practise, Practise
If you want to beat your score on A Nerd's Journey, practise finding the volume of a prism.
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