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20^{2}\times 3.14x=62.8\times 3
Multiply both sides by 3.
400\times 3.14x=62.8\times 3
Calculate 20 to the power of 2 and get 400.
1256x=62.8\times 3
Multiply 400 and 3.14 to get 1256.
1256x=188.4
Multiply 62.8 and 3 to get 188.4.
x=\frac{188.4}{1256}
Divide both sides by 1256.
x=\frac{1884}{12560}
Expand \frac{188.4}{1256} by multiplying both numerator and the denominator by 10.
x=\frac{3}{20}
Reduce the fraction \frac{1884}{12560} to lowest terms by extracting and canceling out 628.