Question

1. Find the mass of an ice cube of edge 2 cm. The density of ice
is 900kg/?​

Answer 1

Explanation:

mass = density × volume

volume of cube = edge length ka cube

(2/100)^3 = 8 × 10^-6

given density = 900 kg/m3

mass = 900 × 8 × 10^-6 = 7.2 × 10^-3 kg or 7.2 gm

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Answer 2

Answer:

7.2g.

Explanation:

Given:

Density = 900kg/m³.

= 900×1000/100×100×100 g/cm³.

= 0.9 g/cm³.

Edge (a) = 2 cm.

since,

volume = a³.

= (2)³.

= 8 cm³.

since,

Mass = Density × volume.

= 0.9 × 8.

= 7.2 g.