Answer:
Volume of the rock=
Step-by-step explanation:
Volume of triangular pyramid = 
Where B is the area of base
H is the height of pyramid
Length if base of base triangle = 8.5 inches
Height of base = 4 inches
Area of base triangle = 
Height of pyramid = 12 inches
Volume of triangular pyramid = 
So, option D is true
Volume of the rock=
(9x-18)=162 it’s very simple
we want correct answer because it will lead or make your standard deviation goes directly
Answer
https://zoom.us/j/99385592884?pwd=ajVOcXZSbGcyT3N3N0kxQm5Zek81Zz09er:
Step-by-step explanation: