Answer:
The volume of the pyramid is 
Step-by-step explanation:
we know that
The volume of the pyramid of the figure is equal to

we have

----> the height must be perpendicular to the base
substitute

The perimeter of a rectangle is given by the formula,

We substitute,
and

into the above formula to obtain the expression,


We now group the x and y terms on the Left Hand Side of the equation to get.


We now divide through by 2 to get,

Therefore the width of the rectangle is

Try using the back of the book.
20.21 multiplied by 999.801 is 20,205.97821, so the correct answer would be A. about 20,000
Answer:
:)
Step-by-step explanation:
0.28571429