CAN SOME ONE JUST HELP ME HOW TO START IT OF PLEASE..
The foundation for a cylindrical water tank is a cylinder 27 ft in diameter and 3 ft high. How many cubic ft of concrete are needed to build the foundation?
The volume of a cylinder is found by using this formula:
V = pi * r^2 * h
Can you take it from there?
Ok so can you please check if I did it correct
v=pi*r^2*h
v=pi*27^2*3=2187+3.14=6867.18 ft^3 and if I round it of to the nearest tenth it will be 6867.3 ft^3
Engineers usually use diameter, which is a measurable quantity physically.
"27 ft in diameter" means radius = 27/2=13.5 ft.
Please try again with r=13.5 ft.
Well you see in my math work it ask me to use 3.14 for pie. and the answer that I got was one my choices so I'm assuming that I did it correct
Is 1716.8 one of the choices too?
YES THERE IS SO HOW DID YOU WORK OUT YOUR PROBLEM HOW DID YOU CAME UP WITH THAT ANSWER?
To find the volume of the cylindrical water tank foundation, we need to calculate the volume of the cylinder. The formula for the volume of a cylinder is given as:
V = π * r^2 * h
Where:
V = Volume of the cylinder
π ≈ 3.14 (pi, a mathematical constant)
r = Radius of the cylinder
h = Height of the cylinder
Step 1: Find the radius of the cylindrical foundation.
The diameter is given as 27 ft, and we know that the radius (r) is half the diameter. So, the radius can be calculated as:
r = 27 ft / 2 = 13.5 ft
Step 2: Calculate the volume of the foundation.
Using the formula for the volume of a cylinder, we substitute the values for radius (r) and height (h) into the formula:
V = π * (13.5 ft)^2 * 3 ft
Calculating this equation will give us the volume of the foundation in cubic feet.
Step 3: Solve the equation.
V = 3.14 * 13.5^2 * 3
By simplifying this equation, we can calculate the volume of the foundation.
Step 4: Calculate the volume.
V ≈ 3.14 * 182.25 * 3
Calculating this equation will give us the volume of the foundation in cubic feet.
So, to find the volume of the cylindrical water tank foundation, multiply 3.14 by 182.25 and then multiply the result by 3:
V ≈ 3.14 * 182.25 * 3
The result will give you the number of cubic feet of concrete needed to build the foundation.