Answer:
Option B
80 in²
Step-by-step explanation:
Volume, V of any shape is the product of cross-sectional area and height. Therefore, V=Ah
Where A is the cross sectional area and h is the height.
Making A the subject of the formula then
A=V/h or V÷h
Substituting 400 in³ for V and 5 in for h then
A=400 in³÷5 in=80 in²
Therefore, the area of base is 80 in²
x
231 cubed centimeters
Find the area of the base of the pyramid
18 x 7=126 divided by 2= 63 cm
Next, make sure to the remember the formula is
1/3(63)(11)=
21(11)=231
231 cubed centimeters is the answer.