Solve for r
r=\frac{13\sqrt[3]{6}}{10000000000000000}\approx 2.362256771 \cdot 10^{-15}
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r≔\frac{13\sqrt[3]{6}}{10000000000000000}
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r=1.3\times \frac{1}{1000000000000000}\sqrt[3]{6}
Calculate 10 to the power of -15 and get \frac{1}{1000000000000000}.
r=\frac{13}{10000000000000000}\sqrt[3]{6}
Multiply 1.3 and \frac{1}{1000000000000000} to get \frac{13}{10000000000000000}.
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