F.2 Maths~ (快)

2007-10-04 3:47 am
1.a)Make A the subject of the formula R=K( l / A)
b)Find the value of A if R=100, K=60 and l = 20.
更新1:

係 I*K/R 定係 KI/R?????????

回答 (2)

2007-10-04 3:52 am
R= KI/A
A=KI/R
A=60x20/100
A=12
參考: none
2007-10-04 3:51 am
1a) R=K( I / A )
A=I*K/R
b)A=(20)*(60) / (100)
A=12


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