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or Question 1: ___ of 5 points)
1.
Devin is making a candle by pouring melted wax into
a mold in the shape of a square pyramid. Each side
of
the base of the pyramid is 9 cm and the height of t
he pyramid is 10 cm. To get the wax for the candle,
Devin
melts cubes of wax that are each 4 cm by 4 cm by 4
cm. How many of the wax cubes will Devin need in or
der
to make the candle? Show your work.

Respuesta :

You need to calculate the volume of the pyramid and the volume of the cubes to calculate how many cubes you need. Volume of a pyramid = length * width * height / 3 = 9 * 9 * 10 / 3 = 810 / 3 = 270. The volume of each cube is 4 x 4 x 4 = 64. To determine how many cubes you need you take 270 / 64 which equals 4.2 which means you need 5 cubes to make a pyramid.

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