鉛球加熱後,直徑增加0.9%.find的百分比增加。?

2016-11-28 1:41 pm

回答 (1)

2016-11-28 4:29 pm
Sol
直徑增加0.9%
半徑增加0.9%
(1+0.9/100)^3
=1.009^3
=1.027243729
(1.027243729-1)/1=0.027243729=2.7243729%
體積增加2.7243729%


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