Solve for the Indicated Variable $\mathrm { A } = 2 \pi \mathrm { a } ^ { 2 }$

Solve for the indicated variable.
- $\mathrm { A } = 2 \pi \mathrm { a } ^ { 2 }$ , for $\mathrm { a }$

A) $\mathrm { a } = \frac { \pm \sqrt { 2 \pi \mathrm { A } } } { 2 \pi }$

B) $a = \sqrt { 2 \pi \mathrm { A } }$

C) $\mathrm { a } = \frac { \pm \mathrm { A } \sqrt { 2 \pi } } { 2 \pi }$

D) $\mathrm { a } = \frac { \pm \sqrt { \mathrm { A } \pi } } { 2 }$

Correct Answer:

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