4*120=(3.14*x*x)

Solution for 4*120=(3.14*x*x) equation:

Simplifying
4 * 120 = (3.14x * x)

Multiply 4 * 120
480 = (3.14x * x)

Multiply x * x
480 = (3.14x2)

Solving
480 = (3.14x2)

Solving for variable 'x'.

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

Add '(-3.14x2)' to each side of the equation.
480 + (-3.14x2) = (3.14x2) + (-3.14x2)

Combine like terms: (3.14x2) + (-3.14x2) = 0.00
480 + (-3.14x2) = 0.00

Add '-480' to each side of the equation.
480 + -480 + (-3.14x2) = 0.00 + -480

Combine like terms: 480 + -480 = 0
0 + (-3.14x2) = 0.00 + -480
(-3.14x2) = 0.00 + -480

Combine like terms: 0.00 + -480 = -480
(-3.14x2) = -480

Divide each side by '-3.14'.
x2 = 152.866242

Simplifying
x2 = 152.866242

Take the square root of each side:
x = {-12.363908848, 12.363908848}