The value of h when A=60cm^2 a=12cm and b=8cm
The value of b when A=15cm^2 a=4cm h=5cm
Given the formula A=1/2(a+b)h find:?
2015-11-19 2:05 pm
回答 (1)
2015-11-19 4:11 pm
✔ 最佳答案
A = (1/2)(a+b)h. h = 2A/(a+b), (a,b) = (12.8)cmand A = 60[cm]^2-->h =2*60cm^2/{(12+8)[cm]}
= 6 [cm]. Now b = (2A/h) -a. Therefore,
A = 15[cm]^2, a = 4[cm], h = 5[cm]-->b={2*15/5 -
4}[cm] = 2[cm].
收錄日期: 2021-05-01 16:27:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151119060558AARETPL