100=(2*3.14*x)x^2

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Solution for 100=(2*3.14*x)x^2 equation: 


Simplifying
100 = (2 * 3.14x) * x2

Multiply 2 * 3.14
100 = (6.28x) * x2

Remove parenthesis around (6.28x)
100 = 6.28x * x2

Multiply x * x2
100 = 6.28x3

Solving
100 = 6.28x3

Solving for variable 'x'.

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

Add '-6.28x3' to each side of the equation.
100 + -6.28x3 = 6.28x3 + -6.28x3

Combine like terms: 6.28x3 + -6.28x3 = 0.00
100 + -6.28x3 = 0.00

Add '-100' to each side of the equation.
100 + -100 + -6.28x3 = 0.00 + -100

Combine like terms: 100 + -100 = 0
0 + -6.28x3 = 0.00 + -100
-6.28x3 = 0.00 + -100

Combine like terms: 0.00 + -100 = -100
-6.28x3 = -100

Divide each side by '-6.28'.
x3 = 15.92356688

Simplifying
x3 = 15.92356688

Reorder the terms:
-15.92356688 + x3 = 15.92356688 + -15.92356688

Combine like terms: 15.92356688 + -15.92356688 = 0.00000000
-15.92356688 + x3 = 0.00000000

The solution to this equation could not be determined.

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