a(r)=(4)3.14r^2

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Solution for a(r)=(4)3.14r^2 equation: 


Simplifying
a(r) = (4) * 3.14r2

Multiply a * r
ar = (4) * 3.14r2

Multiply 4 * 3.14
ar = 12.56r2

Solving
ar = 12.56r2

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Divide each side by 'r'.
a = 12.56r

Simplifying
a = 12.56r

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