5025=4(3.14)r^2

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Solution for 5025=4(3.14)r^2 equation: 


Simplifying
5025 = 4(3.14) * r2

Multiply 4 * 3.14
5025 = 12.56r2

Solving
5025 = 12.56r2

Solving for variable 'r'.

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

Add '-12.56r2' to each side of the equation.
5025 + -12.56r2 = 12.56r2 + -12.56r2

Combine like terms: 12.56r2 + -12.56r2 = 0.00
5025 + -12.56r2 = 0.00

Add '-5025' to each side of the equation.
5025 + -5025 + -12.56r2 = 0.00 + -5025

Combine like terms: 5025 + -5025 = 0
0 + -12.56r2 = 0.00 + -5025
-12.56r2 = 0.00 + -5025

Combine like terms: 0.00 + -5025 = -5025
-12.56r2 = -5025

Divide each side by '-12.56'.
r2 = 400.0796178

Simplifying
r2 = 400.0796178

Take the square root of each side:
r = {-20.001990346, 20.001990346}

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