SOLUTION: A steel oil tank is a cylinder with a diameter of 12 feet and a height of 18 feet how many square feet of steel were needed to make the tank ?

Question 1070058: A steel oil tank is a cylinder with a diameter of 12 feet and a height of 18 feet how many square feet of steel were needed to make the tank ?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
If the top and bottom are both made of steel (not an open top, for example), the steel needed for the top and bottom is pi*r^2*2=2pi*6^2=72 pi ft^2
The side is 2 pi*r*h, because opening it up, it is a rectangle with height h and length the circumference of a circle, 2*pi*r
That is 2*pi*6*18=216 pi ft^2.
The total area and square feet of steel needed is 288 *pi ft^2.
RELATED QUESTIONS
the tank is a cylinder with a diameter of 14 feet and a height of 24 feet (answered by Alan3354)

what must be the dimensions of a steel cylinder in feet if it is to contain 2,020 gallons (answered by ewatrrr)

I need to find the square feet in a tank Height of 21 feet and diameter of 18... (answered by Alan3354)

What would be the dimensions of a steel cylinder in feet if it is to contain 2,020... (answered by josgarithmetic)

Hello.A problem for which solution is required a)Find the curved surface area of a... (answered by ankor@dixie-net.com)

How many cubic feet are in a cylinder that has a diameter of 8 feet and a height of 12... (answered by Alan3354)

A solid steel cylinder has a 6dm and a height of 6dm. How many cubic diameter of metal... (answered by Alan3354)

a water tank is in the shape of a right circular cylinder with a height of 20 feet and a... (answered by ewatrrr)

a water tank is in the shape of a right circular cylinder with a height of 20 feet and a... (answered by lwsshak3,Yzeph)