Many square prism have a total surface area of 144 cm2. Give the volume of one of these prism.
pls help(10 point )
help me to solve it step by step!!
2007-02-04 12:32 am
回答 (1)
2007-02-04 12:45 am
✔ 最佳答案
prime 解棱柱(體),角柱(體)square prism 即是長方體﹐底是正方形
設正方形的底邊長x﹐高是y
total surface area
=2x^2+4xy
現在令x=4
2x^2+4xy=144
2(16)+16y=144
32+16y=144
y=7
所以正方形的底邊長4 cm﹐高是7 cm
the volume
=x^2y
=4^2*7
=112 cm^3
收錄日期: 2021-04-24 08:35:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070203000051KK02656