If the unit of force is $1$ kilo newton, the length is $1 \,km$, and time is $100$ second what will be the unit of mass .............. $kg$
A$10000$
B$1$
C$1000$
D$100$
Medium
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A$10000$
a (a)
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The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively $1.5\%$ and $1\%$, the maximum error in determining the density is ........ $\%$
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