Answer:
48 ft³
Step-by-step explanation:
To find the height, you can use the slant height and the base.
Using the Pythagorean Theorem and 3 as the triangle's base,
a²+b²=c²
3²+b²=5²
9+b²=25
b²=16
b=4
The height of the pyramid is 4.
Volume formula for the pyramid is 
Inserting our measurements:

To do that you do 6*3=18 and then you have 18(x+2) To find X we distribute the 18
18x + 36 is what is left
Hope that helped:)
21 and -14 ..............
Answer:
It is D.
Step-by-step explanation: