A(4)=3.14r*3.14r

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Solution for A(4)=3.14r*3.14r equation: 


Simplifying
A(4) = 3.14r * 3.14r

Reorder the terms for easier multiplication:
4A = 3.14r * 3.14r

Reorder the terms for easier multiplication:
4A = 3.14 * 3.14r * r

Multiply 3.14 * 3.14
4A = 9.8596r * r

Multiply r * r
4A = 9.8596r2

Solving
4A = 9.8596r2

Solving for variable 'A'.

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

Divide each side by '4'.
A = 2.4649r2

Simplifying
A = 2.4649r2

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