Respuesta :

Kalahira
You must get p by itself, so first subtract B from both sides: SA-B=1/2lp. Then multiply both sides by 2, which cancels out the 1/2: 2SA=lp. Then divide both sides by l: (2SA)/l=p.
MrRoyal

To find the value for a variable in an equation means that we change the subject of the formula. The formula for finding p is:

[tex]p = \frac{2(SA - B)}{l}[/tex]

Given that:

[tex]SA = \frac{1}{2}lp + B[/tex]

Subtract B from both sides

[tex]SA - B= \frac{1}{2}lp[/tex]

Multiply both sides by 2

[tex]2(SA - B)= lp[/tex]

Divide both sides by l

[tex]\frac{2(SA - B)}{l}= p[/tex]

Rewrite as:

[tex]p = \frac{2(SA - B)}{l}[/tex]

Hence, the formula for finding p is:

[tex]p = \frac{2(SA - B)}{l}[/tex]

Read more about subject of the formula at:

https://brainly.com/question/16955788

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