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Simplifying
2000 = 3.14r2
Solving
2000 = 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.
2000 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
2000 + -3.14r2 = 0.00
Add '-2000' to each side of the equation.
2000 + -2000 + -3.14r2 = 0.00 + -2000
Combine like terms: 2000 + -2000 = 0
0 + -3.14r2 = 0.00 + -2000
-3.14r2 = 0.00 + -2000
Combine like terms: 0.00 + -2000 = -2000
-3.14r2 = -2000
Divide each side by '-3.14'.
r2 = 636.9426752
Simplifying
r2 = 636.9426752
Take the square root of each side:
r = {-25.237723257, 25.237723257}
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