Question

Copper metal(Density 1.3 g/cm³) is casted into two shapes : cone & cylinder with same radius & height respectively 0.7m & 3m. Find the difference in their masses in two shapes.

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Answer 1

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density of copper = 1.3 g/cm³ =

Radius of cone and cylinder = 0.7 m

Height of cone and cylinder = 3m

First of all we need to find their volumes.

Volume of cone = 1/3 π r² h = 1/3×π×0.49×3 = 0.49π m³

Volume of cylinder = πr²h = π × 0.49 × 3 = 1.47π m³

Mass= density × volume

Now, find the mass of both cone and cylinder using this formula, where, density is constant ( density = 1.3 g/cm³).

then subtract the lesser mass from the bigger mass. That will be the difference in mass.