A candle is .75 inch in diameter and 6 inches long. In making 24 dozen of these candles, how many cubic inches of wax are used?
2006-10-02 11:40:13 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Radius of the candle: .75 / 2 = .375 inch
Area of the candle (circle): pi * .375^2 = .4417 square inches
Volume of the candle: 6 * .4417 = 2.651 cubic inches
24 dozen = 24 * 12 = 288 candles
Total volume wax: 288 * 2.651 = 763.4 cubic inches
(If you find slightly different numbers, then you rounded off halfway.)
2006-10-02 11:43:55 · answer #1 · answered by dutch_prof 4 · 0⤊ 0⤋
a candle is supposed to be a cylinder...
the volume of a cylinder is
V = base surface * height
We have to calculate base surface
BS = 3.1416 * (0.75/2)^2
BS = 0.4418 inch^2
We calculate volume of 1 candle
V = 0.4418 inch^2 * 6 inch = 2.6508 inch^3
Total wax for 24 candles
2.6508 inch^3 * 24 = 63.9162
2006-10-02 11:49:25 · answer #2 · answered by Uncle Rodri 1 · 0⤊ 0⤋
24 * 12 * 6 * pi * (0.75/2) ^2
2006-10-02 11:42:32 · answer #3 · answered by animal 2 · 0⤊ 0⤋
I'm not doing your math homework
2006-10-02 11:50:03 · answer #4 · answered by ♂Joe♂ 2 · 0⤊ 0⤋
Not enough, I hate math
2006-10-02 11:47:15 · answer #5 · answered by Muffy 2 · 0⤊ 0⤋
Melt them and then measure them.
2006-10-02 11:47:16 · answer #6 · answered by S K 7 · 0⤊ 0⤋