38(3.14)=(3.14)r^2

Solution for 38(3.14)=(3.14)r^2 equation:

Simplifying
38(3.14) = (3.14) * r2

Multiply 38 * 3.14
119.32 = (3.14) * r2

Solving
119.32 = 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.
119.32 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
119.32 + -3.14r2 = 0.00

Add '-119.32' to each side of the equation.
119.32 + -119.32 + -3.14r2 = 0.00 + -119.32

Combine like terms: 119.32 + -119.32 = 0.00
0.00 + -3.14r2 = 0.00 + -119.32
-3.14r2 = 0.00 + -119.32

Combine like terms: 0.00 + -119.32 = -119.32
-3.14r2 = -119.32

Divide each side by '-3.14'.
r2 = 38

Simplifying
r2 = 38

Take the square root of each side:
r = {-6.164414003, 6.164414003}