Answer: 16 cm^2.
Step-by-step explanation: The volume of a pyramid is equal to one-third the product of the area of the base and the height:
![V=(1)/(3)A*h](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ro2c4hpgfhfqh4bxjjrvtupaij8asalpr4.png)
In this case, the base is a square, so its area is:
A=L^2 where "L" is the lenght of the base edge
So the volume would be:
![V=(1)/(3)L^(2) *h](https://img.qammunity.org/2020/formulas/mathematics/middle-school/h34ol236s08zhfo5ddvkt3cq7spiv5831j.png)
![V=(1)/(3)4^(2) *3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4arc7mvtn75bqinqj7v8pi76iidzrlgd7n.png)
V=16*3/3
![V=16cm^(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/wgywcafxkglhj5ao45mhrj41oa2tcru3an.png)