Posted by ASDFGHJKL; on Thursday, November 10, 2011 at 5:00am.
A = h/2 (a+b)
the subject of the given formula is "a" not "A"
please include workings (along with solution) thanks

Math  ASDFGHJKL;, Thursday, November 10, 2011 at 5:02am
this topic that i learned in class is "changing the subject of a formula" FYI

Math  drwls, Thursday, November 10, 2011 at 5:11am
Use algebra to derive the formula for a in terms of h, A and b.
You should use parentheses to show if (a+b) is part of the denominator of a fraction h/[2(a+b)], or not. I will assume you mean
A = (h/2)*(a+b)
a + b = 2A/h
a = 2A/h b

Math  ASDFGHJKL;, Thursday, November 10, 2011 at 5:15am
God bless you. Thanks!
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