45(3.14)=(3.14)r^2

Solution for 45(3.14)=(3.14)r^2 equation:

Simplifying
45(3.14) = (3.14) * r2

Multiply 45 * 3.14
141.3 = (3.14) * r2

Solving
141.3 = 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.
141.3 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
141.3 + -3.14r2 = 0.00

Add '-141.3' to each side of the equation.
141.3 + -141.3 + -3.14r2 = 0.00 + -141.3

Combine like terms: 141.3 + -141.3 = 0.0
0.0 + -3.14r2 = 0.00 + -141.3
-3.14r2 = 0.00 + -141.3

Combine like terms: 0.00 + -141.3 = -141.3
-3.14r2 = -141.3

Divide each side by '-3.14'.
r2 = 45

Simplifying
r2 = 45

Take the square root of each side:
r = {-6.708203933, 6.708203933}