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Simplifying
10r2 = 3
Solving
10r2 = 3
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Divide each side by '10'.
r2 = 0.3
Simplifying
r2 = 0.3
Take the square root of each side:
r = {-0.547722558, 0.547722558}
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