Answer:
The volume of the pyramid is 33.33 cubic inches
Step-by-step explanation:
we know that
The volume of the rectangular bases pyramid is given by the formula

where
B is the area of the rectangular base of pyramid
h is the height of pyramid
we have

substitute

Answer:
an = -9 -3(n -1)
Step-by-step explanation:
The explicit formula for an arithmetic sequence with first term a1 and common difference d is ...
an = a1 +d(n -1)
Putting your numbers into the formula gives ....
an = -9 -3(n-1)