SA=2pir^2+2pir^2

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Solution for SA=2pir^2+2pir^2 equation: 


Simplifying
SA = 2pir2 + 2pir2

Combine like terms: 2ipr2 + 2ipr2 = 4ipr2
AS = 4ipr2

Solving
AS = 4ipr2

Solving for variable 'A'.

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

Divide each side by 'S'.
A = 4ipr2S-1

Simplifying
A = 4ipr2S-1

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