Respuesta :

As given 

[tex]A = \frac{1}{2} * b* h [/tex]

Firstly we will multiply both sides by 2.

[tex]2*A = 2* \frac{1}{2} * b * h [/tex]

[tex]2A = bh[/tex]

Now dividing both sides of equation from h.

[tex] \frac{2A}{h} = \frac{bh}{h} [/tex]

[tex] \frac{2A}{h} = b [/tex]

So b =  [tex] \frac{2A}{h} [/tex]

The solution for b from the equation is; b = 2A/h

Subject of the formula

According to the question;

  • The given formula is; A=1/2 × b × h

Hence, multiply both sides of the equation by 2;

  • 2A = b× h.

Divide both sides of the equation by h;

  • b = 2A/h

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