Answer:
the volume of the gemstone is 56 millimeters^3
Explanation:
The computation of the volume of the gemstone is shown below:
As we know that
The volume of the triangular pyramid is
= (1 ÷ 3) × (base area) × h
Now put the given values to the above formula
= 1 ÷ 3 × 42 × 4
= 56 millimeters^3
Hence, the volume of the gemstone is 56 millimeters^3
The above formula should be used and the same should be considered