s=3.14s(r+r)

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Solution for s=3.14s(r+r) equation: 


Simplifying
s = 3.14s(r + r)

Combine like terms: r + r = 2r
s = 3.14s(2r)

Remove parenthesis around (2r)
s = 3.14s * 2r

Reorder the terms for easier multiplication:
s = 3.14 * 2s * r

Multiply 3.14 * 2
s = 6.28s * r

Multiply s * r
s = 6.28rs

Solving
s = 6.28rs

Solving for variable 's'.

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

Add '-6.28rs' to each side of the equation.
-6.28rs + s = 6.28rs + -6.28rs

Combine like terms: 6.28rs + -6.28rs = 0.00
-6.28rs + s = 0.00

Factor out the Greatest Common Factor (GCF), 's'.
s(-6.28r + 1) = 0.00


Subproblem 1
Set the factor 's' equal to zero and attempt to solve:

Simplifying
s = 0

Solving
s = 0

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

Simplifying
s = 0

Subproblem 2
Set the factor '(-6.28r + 1)' equal to zero and attempt to solve:

Simplifying
-6.28r + 1 = 0

Reorder the terms:
1 + -6.28r = 0

Solving
1 + -6.28r = 0

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

Add '-1' to each side of the equation.
1 + -1 + -6.28r = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -6.28r = 0 + -1
-6.28r = 0 + -1

Combine like terms: 0 + -1 = -1
-6.28r = -1

Add '6.28r' to each side of the equation.
-6.28r + 6.28r = -1 + 6.28r

Combine like terms: -6.28r + 6.28r = 0.00
0.00 = -1 + 6.28r

Simplifying
0.00 = -1 + 6.28r

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
s = {0}

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