Answer:
B
Step-by-step explanation:
Volume of a triangular pyramid = [tex]\frac{1}{3} bh[/tex]
where b = area of base and h = height
We are already given that the height is 17in
All we need to do is find the area of the base.
The base is a triangle with a base length of 12 in and a height of 10 in
To find the area of a triangle we multiply the base length by the height then divide by 2
so area = (12 * 10 ) / 2
12 * 10 = 120
120 / 2 = 60
Hence the area of the base is 60in²
Now we plug in the values into the formula for volume of a pyramid
[tex]V=\frac{1}{3} 60*17\\\frac{1}{3} 60=20\\20*17=340[/tex]
V = 340
Hence the answer is B
