Solve for P
P=84a^{2}
Solve for a (complex solution)
a=-\frac{\sqrt{21P}}{42}
a=\frac{\sqrt{21P}}{42}
Solve for a
a=\frac{\sqrt{21P}}{42}
a=-\frac{\sqrt{21P}}{42}\text{, }P\geq 0
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\frac{7a^{2}\times 24}{2}=P
Multiply a and a to get a^{2}.
\frac{168a^{2}}{2}=P
Multiply 7 and 24 to get 168.
84a^{2}=P
Divide 168a^{2} by 2 to get 84a^{2}.
P=84a^{2}
Swap sides so that all variable terms are on the left hand side.
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