Math一問~~~~~
2007-03-18 4:50 am
When a metal rod is heated , the length of the rod increase by 8% . Find the percentage increase in volume of the metal rod .
回答 (1)
2007-03-18 5:05 am
✔ 最佳答案
Let L1 be new length,. L2 be old lengthand, V1 be new volume, V2 be old volume
Then,
L1/L2 = 1.08
V1/V2 = (L1/L2)^3 = 1.259712
Percentage increase in volume = 25.9712%
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