Your question is confused. A diameter is expressed by only one number, it is not a rectangle. And any number can be doubled. Multiplication by 2 is very simple.
Your diameter is double the radius. So the diameter is 6
The diameter is double the radius: so 12 units.
The diameter is double the radius, so 8 inches.
4 to 6 micrometers
Points: (-5, 4) and (3, -6) Length: (-5-3)2+(4--6)2 = 164 and the square root of this is the diameter
The diameter is double the radius of a circle. Therefore the radius is 12/2 or 6 yards.
You get 2 circles of diameter. If you were trying to find a perimeter, Never double the diameter. If you have a radius, You have to double it to get a perimeter.
The volume is proportional to the cube of the diameter, but the area, only to the square of the diameter. For example, if you double the diameter, the area will increase by a factor of 4, and the volume, by a factor of 8. Thus, the area/volume ratio will worsen, by a factor of 2.The volume is proportional to the cube of the diameter, but the area, only to the square of the diameter. For example, if you double the diameter, the area will increase by a factor of 4, and the volume, by a factor of 8. Thus, the area/volume ratio will worsen, by a factor of 2.The volume is proportional to the cube of the diameter, but the area, only to the square of the diameter. For example, if you double the diameter, the area will increase by a factor of 4, and the volume, by a factor of 8. Thus, the area/volume ratio will worsen, by a factor of 2.The volume is proportional to the cube of the diameter, but the area, only to the square of the diameter. For example, if you double the diameter, the area will increase by a factor of 4, and the volume, by a factor of 8. Thus, the area/volume ratio will worsen, by a factor of 2.
As circumference = π x diameter and π is constant (≈ 3.14159), doubling the diameter will double the circumference.
The diameter would be 8cm, because the diameter is always double the radius. That's why the formula 2'Pi'r is also known as 'Pi'd.
Make the radius the subject of the formula 4/3*pi* radius3 = volume and then double it to give the diameter.
Circumference = Pi times diameter. So double the radius to find the diameter. Multiply by Pi (3.14159)