For the upcoming holiday season, dorothy wants to mold 20 bars of chocolate into tiny pyramids. each bar of chocolate contains 6 cubic inches of chocolate. dorothy plans to make chocolate pyramids with a square base of 1 square inch and a height of 2 inches. what is the largest number of pyramids she can make from the 20 bars of chocolate?

She has 20 chocolate bars. Each chocolate bar contains 6 cubic inches of chocolate. So she must have a total of 20 * 6 = 120 cubic inches of chocolate.

The volume of a square pyramid is:



Where 's' is the length of the base and 'h' is the height. However, we are given the area of the base(1 square inch) and the height(2 inches). represents the area of the base, so we can just replace '1' with this.



Multiply:



So the area of one square pyramid is 2/3 of a cubic inch. We can divide this to the total amount we have to find out how many she can make:



Flip the fraction and multiply:





Divide:



So she can make 180 pyramids from the 20 bars of chocolate.