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Brenda is making a candle by pouring melted wax into a mold in the shape of a cylinder. The diameter of the cylinder mold is 6 and the height of the cylinder is 8 cm. To get the wax for the candles, Brenda melts cubes of wax that are each 3cm by 3cm by 3cm. How many of the wax cubes will Brenda need in order to make the candle?

 

 

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I was thinking of cylinder base formula (circular) and cylinder volume formula. I already know to half the diamater to get the radius to fee the requirements for the formula. I'm a little stuck and maybe not even sure thats the right start.

 Feb 15, 2019
edited by Guest  Feb 15, 2019

Best Answer 

 #1
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Volume of a cylinder =Pi x r^2 x h
Volume =Pi x r^2 x h
                  =Pi x (6/2)^2 x 8
                  =226.195  cm^3
Volume of a Cube =S^3
                V =3^3 =27 cm^3
226.195 / 27 =8.378 =~8 - Wax cubes that Brenda will need.

 Feb 15, 2019
 #1
avatar
+1
Best Answer

Volume of a cylinder =Pi x r^2 x h
Volume =Pi x r^2 x h
                  =Pi x (6/2)^2 x 8
                  =226.195  cm^3
Volume of a Cube =S^3
                V =3^3 =27 cm^3
226.195 / 27 =8.378 =~8 - Wax cubes that Brenda will need.

Guest Feb 15, 2019

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