The volume of a block of gold is 0.5 m

Question:

The volume of a block of gold is 0.5 m3. If it is hammered into a sheet to cover an area of 1 hectare, find the thickness of the sheet.

Solution:

Volume of the block $=0.5 \mathrm{~m}^{3}$

We know:

1 hectare $=10000 \mathrm{~m}^{2}$

Thickness $=\frac{\text { Volume }}{\text { Area }}=\frac{0.5}{10000}=0.00005 \mathrm{~m}=0.005 \mathrm{~cm}=0.05 \mathrm{~mm}$

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