16=3.14(r)2

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Solution for 16=3.14(r)2 equation: 


Simplifying
16 = 3.14(r) * 2

Reorder the terms for easier multiplication:
16 = 3.14 * 2r

Multiply 3.14 * 2
16 = 6.28r

Solving
16 = 6.28r

Solving for variable 'r'.

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

Add '-6.28r' to each side of the equation.
16 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
16 + -6.28r = 0.00

Add '-16' to each side of the equation.
16 + -16 + -6.28r = 0.00 + -16

Combine like terms: 16 + -16 = 0
0 + -6.28r = 0.00 + -16
-6.28r = 0.00 + -16

Combine like terms: 0.00 + -16 = -16
-6.28r = -16

Divide each side by '-6.28'.
r = 2.547770701

Simplifying
r = 2.547770701

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