3.14(r^2*120)=37680

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Solution for 3.14(r^2*120)=37680 equation: 


Simplifying
3.14(r2 * 120) = 37680

Reorder the terms for easier multiplication:
3.14(120r2) = 37680

Remove parenthesis around (120r2)
3.14 * 120r2 = 37680

Multiply 3.14 * 120
376.8r2 = 37680

Solving
376.8r2 = 37680

Solving for variable 'r'.

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

Divide each side by '376.8'.
r2 = 100

Simplifying
r2 = 100

Take the square root of each side:
r = {-10, 10}

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