Come a sister out on 2 geometry questions

1- question

Data:
width = 6 cm
length = 5 cm
height = 8 cm

First we will find the area of the base that is square, we have:

Ab = 6 * 5 
Ab = 30 cm²

Now we will calculate the volume of a square pyramid, we have:
Formula: 

Solving:





D) 80 cm³

2- question:

Data:
width = 7 in
length = 7 in
height = 9 in

First we will find the area of the base that is square, we have:

Ab = 7 * 7 
Ab = 49 in²

Now we will calculate the volume of a square pyramid, we have:
Formula: 

Solving:





 
C) 147 in³