140*3.13=2*3.14*r*10

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Solution for 140*3.13=2*3.14*r*10 equation:


Simplifying
140 * 3.13 = 2 * 3.14r * 10

Multiply 140 * 3.13
438.2 = 2 * 3.14r * 10

Reorder the terms for easier multiplication:
438.2 = 2 * 3.14 * 10r

Multiply 2 * 3.14
438.2 = 6.28 * 10r

Multiply 6.28 * 10
438.2 = 62.8r

Solving
438.2 = 62.8r

Solving for variable 'r'.

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

Add '-62.8r' to each side of the equation.
438.2 + -62.8r = 62.8r + -62.8r

Combine like terms: 62.8r + -62.8r = 0.0
438.2 + -62.8r = 0.0

Add '-438.2' to each side of the equation.
438.2 + -438.2 + -62.8r = 0.0 + -438.2

Combine like terms: 438.2 + -438.2 = 0.0
0.0 + -62.8r = 0.0 + -438.2
-62.8r = 0.0 + -438.2

Combine like terms: 0.0 + -438.2 = -438.2
-62.8r = -438.2

Divide each side by '-62.8'.
r = 6.977707006

Simplifying
r = 6.977707006

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