Evaluate
\frac{20km^{2}}{3h}
Differentiate w.r.t. k
\frac{20m^{2}}{3h}
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\frac{\frac{20}{3}mkm}{h}
Divide 120m by 18 to get \frac{20}{3}m.
\frac{\frac{20}{3}m^{2}k}{h}
Multiply m and m to get m^{2}.
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