SA=2*3.14*4+2*3.14*2

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Solution for SA=2*3.14*4+2*3.14*2 equation: 


Simplifying
SA = 2 * 3.14 * 4 + 2 * 3.14 * 2

Multiply 2 * 3.14
AS = 6.28 * 4 + 2 * 3.14 * 2

Multiply 6.28 * 4
AS = 25.12 + 2 * 3.14 * 2

Multiply 2 * 3.14
AS = 25.12 + 6.28 * 2

Multiply 6.28 * 2
AS = 25.12 + 12.56

Combine like terms: 25.12 + 12.56 = 37.68
AS = 37.68

Solving
AS = 37.68

Solving for variable 'A'.

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

Divide each side by 'S'.
A = 37.68S-1

Simplifying
A = 37.68S-1

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