By dividing the diameter by 2 will give the circle's radius. Area of any circle = pi*radius squared.
The question is in really bad english, but I'm guessing your meant: 'How do I work out the diameter using pi?' Diameter= Radius2 You don't need to use Pi to work out the diameter. Unless you have a question that doesn't show you the radius. Then you do Area divided by Pi which equals the Diameter.
The area of a circle with a diameter of 9.4 m is: 69.4 m2
A diameter is a line, and has no area.A circle whose diameter is 8.5 has an area of 56.745. (rounded)
Divide the area by pi (= 3.14159 approx) to get diameter.
The hot work ratio is the area ratio of the cast diameter and the pre-machined finished diameter.
The answer will depend on what information you have: radius, area, diameter.
By dividing the diameter by 2 will give the circle's radius. Area of any circle = pi*radius squared.
Assuming you know the radius or diameter...(Pi) x (radius) x (radius) or (1/4 Pi) x (diameter) x (diameter) will give you the area.
The question is in really bad english, but I'm guessing your meant: 'How do I work out the diameter using pi?' Diameter= Radius2 You don't need to use Pi to work out the diameter. Unless you have a question that doesn't show you the radius. Then you do Area divided by Pi which equals the Diameter.
area = pi*radius2Remember, to half the diameter to get the radius.Get the area of the outside circle, and the area of the inside circle, then take the inside area from the outside.I think it would be more helpful to you not to give you the answer. Work it out from this. If you are wondering what pi is, it is 3.14159
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
Total surface area = (2*pi*radius2)+(pi*diameter*height)
The area of a circle with a diameter of 9.4 m is: 69.4 m2
A diameter is a line, and has no area.A circle whose diameter is 8.5 has an area of 56.745. (rounded)
pi times the radius squared or pi (approx 3.14) times the diameter
The diameter of a circle with an area of 37.68 is 6.92