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?
A.
180
B.
240
C.
450
D.
520
E.
580

Respuesta :

The largest number of pyramids she can make from 20 bars can be determined by dividing the total volume of the 20 bars by the volume of a pyramid of chocolate. So that, the largest number of pyramids she can make from 20 bars is 180.

Given that each bar contains 6 [tex]in^{3}[/tex] of chocolate.

The volume of 20 bars of chocolate = 20 x 6

                                           = 120 [tex]in^{3}[/tex]

The volume of 20 bars of chocolate is 120 [tex]in^{3}[/tex].

Given that a pyramid of chocolate has a square base of 1 [tex]in^{2}[/tex] and a height of 2 inches.

Thus,

the volume of a pyramid of chocolate = [tex]\frac{1}{3}[/tex]*base area*height

                                                 = [tex]\frac{1}{3}[/tex]* 1 * 2

                                                 = [tex]\frac{2}{3}[/tex]

the volume of a pyramid of chocolate is [tex]\frac{2}{3}[/tex] [tex]in^{3}[/tex].

Therefore, the largest number of pyramids she can make from 20 bars would be:

            120 ÷ [tex]\frac{2}{3}[/tex]

           = 120 x [tex]\frac{3}{2}[/tex]

           = 180

The largest number of pyramids she can make from 20 bars is 180.

For more on volume of pyramid, visit: https://brainly.com/question/23432363

Answer:

180

Step-by-step explanation:

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