英文回答**
q3：may makes a dozen small candles melt and recast it into a large cylindrical candle of height 20cm. if at first each small candle is a cylinder of radius 1cm and height 9cm.find the radius of the large candle formed.
中二數學一問
2007-08-01 12:02 am
回答 (1)
2007-08-01 12:11 am
✔ 最佳答案
q3：may makes a dozen small candles melt and recast it into a large cylindrical candle of height 20cm. if at first each small candle is a cylinder of radius 1cm and height 9cm.find the radius of the large candle formedThe volumn of cylinder are
V = πhr^2
The total volumn of arge cylindrical candle
12 πhr^2 = πHR^2
12 (9)(1)^2 = (20)R^2
R = 2.32cm
The radius of the large candle formed are 2.32cm
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