Answer: 30 square inches.
Step-by-step explanation: Take the equation, V=(1/3)AH
For V=Volume, A=Area of base, and H=equals the height of the triangular pyramid.
We know the area of the base is 9, and the height is 10. So, multiply 10x9. You get 90.
Now, to get the v, you divide 90 by 3 to get 30. V=30.