140.9546=3.14r^2

Solution for 140.9546=3.14r^2 equation:

Simplifying
140.9546 = 3.14r2

Solving
140.9546 = 3.14r2

Solving for variable 'r'.

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

Add '-3.14r2' to each side of the equation.
140.9546 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
140.9546 + -3.14r2 = 0.00

Add '-140.9546' to each side of the equation.
140.9546 + -140.9546 + -3.14r2 = 0.00 + -140.9546

Combine like terms: 140.9546 + -140.9546 = 0.0000
0.0000 + -3.14r2 = 0.00 + -140.9546
-3.14r2 = 0.00 + -140.9546

Combine like terms: 0.00 + -140.9546 = -140.9546
-3.14r2 = -140.9546

Divide each side by '-3.14'.
r2 = 44.89

Simplifying
r2 = 44.89

Take the square root of each side:
r = {-6.7, 6.7}