2*3.14*r^2+2*3.14*r*20=1000cm^2

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Solution for 2*3.14*r^2+2*3.14*r*20=1000cm^2 equation: 


Simplifying
2 * 3.14r2 + 2 * 3.14r * 20 = 1000cm2

Multiply 2 * 3.14
6.28r2 + 2 * 3.14r * 20 = 1000cm2

Reorder the terms for easier multiplication:
6.28r2 + 2 * 3.14 * 20r = 1000cm2

Multiply 2 * 3.14
6.28r2 + 6.28 * 20r = 1000cm2

Multiply 6.28 * 20
6.28r2 + 125.6r = 1000cm2

Reorder the terms:
125.6r + 6.28r2 = 1000cm2

Solving
125.6r + 6.28r2 = 1000cm2

Solving for variable 'r'.

Reorder the terms:
-1000cm2 + 125.6r + 6.28r2 = 1000cm2 + -1000cm2

Combine like terms: 1000cm2 + -1000cm2 = 0
-1000cm2 + 125.6r + 6.28r2 = 0

The solution to this equation could not be determined.

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