SA=2(lh+wh)

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Solution for SA=2(lh+wh) equation: 


Simplifying
SA = 2(lh + wh)
AS = (hl * 2 + hw * 2)
AS = (2hl + 2hw)

Solving
AS = 2hl + 2hw

Solving for variable 'A'.

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

Divide each side by 'S'.
A = 2hlS-1 + 2hwS-1

Simplifying
A = 2hlS-1 + 2hwS-1

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