Answer:

Step-by-step explanation:
The volume of a pyramid is

where B = area of the base, and h = height of the pyramid
The base is a square.




The side of the base has length 6. Each face of the pyramid is an equilateral triangle with side of length 6.
An altitude of this triangle measures


The pyramid is formed by 4 equilateral triangles whose bases form a square. The tips of the faces meet at a single point on top. The vertical distance from that point to the center of the base is the height of the pyramid.




Volume of the pyramid:



Answer:
?
Step-by-step explanation:
I think your answer is 90
So first you would divide 3,600 by 420. You should get the answer of 8. Then multiply 8 by 12 to get the total number of gallon needed, which is 96 gallons.
Answer: 2.7 hours
Step-by-step explanation:
3 x 54 = 162, 162 is how many miles the drive is. If he is going 60 mph you have to divide 162/60 and you get 2.7 hours