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The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h.

A=h(a+b)2

Solve for b.

b=2A−ah

b=Ah2−a

b=2Ah+a

b=2Ah−a

Respuesta :

I'm assuming the original equation is [tex]A= \frac{h(a+b)}{2} [/tex]
Step 1: Multiply both sides by 2 to eliminate the denominator
Step 2: divide by h
Step 3: subtract a
[tex]b= \frac{2A}{h} -a[/tex]

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