1.

The volume of a cube of side 10 cm. is … `m^3.` (ii) A vehicle moving with a speed of `36kg h^(-1)` covers …. M in 1 sec. (iii) The density of water at `4^@C is ……g//cc or ……kg//m^3.`

Answer» (i) As `v = L^3`
and `L = 10 cm = 10^(-1)m`
`:. V = (10^(-1)m)^3 m^3`
(ii) `upsilon = (36km)/(hr) = (36xx1000m)/(60xx60s) = 10m//s.`
(iii)density = `(mass)/(volume) = (1g)/((1 cm)^3)`
`= 1g//cc = (10^(-3)kg)/((10-2m)^3 ) = 10^3kg//m^(3)`


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