Answer:
[tex]300\ in^3[/tex]
Step-by-step explanation:
Use formula for the volume of the square pyramid:
[tex]V=\dfrac{1}{3}\cdot \text{Base area}\cdot \text{Height}[/tex]
The base is a square with side 10 inches long, so its area is
[tex]\text{Base area}=10^2=100\ in^2[/tex]
The height of the pyramid is 9 inches long, so the volume is
[tex]V=\dfrac{1}{3}\cdot 100\cdot 9=300\ in^3[/tex]
