如何自己估算出现有钻石的重量

　　1kela，0.3kelazuanshishizenmejisuanchulaide?xiaofeizhezijikeyigusuanchuzuanshidezhongliangma?zuanshizhongliangshiyikelaweidanweilaijisuande，dajiakeyishishiyixiazheigejisuanzuanshizhongliangdefangfa。

　　zaiershishijichukelazhongliangzaiquanqiudedaotongyibingbiaozhunhua。1kela=200haoke=0.2ke=100fen，zaizuanshidezhengshushang，zuanshidezhongliangdoujingquedaoxiaoshudianhoudedisanwei。

　　ruguoxiangzhidaozuanshishifouwuyousuozhi，zijidezuanshishifoubeishangjiazuoshoujiaohuoyongjiazuanshidaiti，zuihaodefangfajiushizijijisuanzuanshizhongliang，zheilimianyouyigejisuangongshi：

　　zhijingdelifang×0.00366(yunxuyou±0.03keladewucha，danweihaomi)

　　zhiyaoninzhidaozijizuanshidezhijing(zijiyongyoubiaokayenengliangchu)，zekeyijiliangchuzuanshizhongliang。

　　liru，yike71fendezuanshi，cechuzuanshizhijingshi5.79haomi，taoyonggongshijiukeyilaijisuanchuzheizuanshizhongliang，5.79×5.79×5.79×0.00366≈0.710kela，yunxuyou±0.03keladewucha，nidezuanshishihuozhenjiashidezuanshi。ruguochuxianpianchataidanijiuyaoxiaoxinnidezuanshidele。