A*h-2*pi*r=pi*r^2

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Solution for A*h-2*pi*r=pi*r^2 equation:


Simplifying
A * h + -2pi * r = pi * r2

Multiply A * h
hA + -2pi * r = pi * r2

Multiply ip * r
hA + -2ipr = pi * r2

Multiply ip * r2
hA + -2ipr = ipr2

Solving
hA + -2ipr = ipr2

Solving for variable 'h'.

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

Add '2ipr' to each side of the equation.
hA + -2ipr + 2ipr = 2ipr + ipr2

Combine like terms: -2ipr + 2ipr = 0
hA + 0 = 2ipr + ipr2
hA = 2ipr + ipr2

Divide each side by 'A'.
h = 2iprA-1 + ipr2A-1

Simplifying
h = 2iprA-1 + ipr2A-1

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