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I have had many conflicting ultrasounds. I had the exact opposite problem- the femur length was a week further in gestation than the head or abdomen, and the estimated weight put her a week further along than her femur. What my ultrasound technician told me was to trust in the initial date given by the obgyn when I had my very first ultrasound (I was only 5 weeks at my first appt). The earlier the scan, the less the variation in size. I am 5'1, but with those long legs, I guess our little girl is going to be 6'5 like her daddy!

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The best person to ask is the person doing the ultrasound. Having said that here are a few guidelines. Ultrasounds can give you a fairly accurate time for the length of the pregnancy. Before 10 weeks the measurement taken is crown-rump length, from the top of the head to the bottom of the spine. This is accurate to within 3-4 days. After about 12 weeks several measurements are taken, head circumference, head diameter and abdominal diameter as well as femur length and the results are plotted on a graph to compare with the estimated length of pregnancy. The earlier the measurements are taken the more accurate they are in assessing the length of the pregnancy.

Circumference is Pi x Diameter so do Circumference divided by Pi to get the diameter :)

circumference is Pi, 3.14, times the diameter. If the diameter is 3 then the circumference is 9.42

Circumference of a circle = diameter*pi Diameter of a circle = circumference/pi

Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.

circumference = Pi * diameterdiameter = circumference / PiThe diameter is 4/Pi or approximately1.2732490258705930933383273555459.

Diameter = Circumference/pi

diameter = circumference/pi

The circumference and diameter of a circle are related by Pi (about 3.1416):diameter x Pi = circumferencecircumference divided by Pi = diameter

using the formula circumference=diameter X pi: circumference=diameter X pi circumference/pi=diamter X pi/pi circumference/pi=diameter therefore, diameter=circumference/pi diameter=12mm/3.14 diameter=3.821mm

Since the circumference is Pi times the diameter then divide the circumference by Pi (3.14159) to get the diameter

The circumference of a circle with a diameter of 10 is: 31.416. (Circumference = Pi x diameter)

The circumference of a 13.5 diameter circle is: 42.41(diameter x pi = circumference).

circumference = pi*diameter so diameter = circumference/pi = 4.456 inches

Circumference = pi*diameter So diameter = circumference/pi = 9.87 mi

If a circle has a circumference of 8 the diameter is: about 2.546 (circumference divided by pi = diameter).

Circumference = diameter(pi) so divide the circumference by pi to get the diameter.

Circumference = pi*diameter So diameter = circumference/pi = 1.59 units

circumference=pie x diameter diameter= circumference/pie pie= 3.141592654

Yes because: circumference/diameter = pi and circumference = pi*diameter

circumference = diameter * pi. Therefore, diameter = circumference ÷ pi.

Pi represents the ratio of the circumference of a circle to its diameter. If you know the diameter (D), then the circumference (c) is (D) *pi. If you know the circumference (C), then the diameter (D) is (C)/pi. circumference is 2PiRR is the radius.so 2R is twice the radius (a.k.a. The Diameter)That leaves you withCircumference=Diameter*PiThe circumference can be found by multiplying the diameter by pi, and the diameter can be found by dividing the circumference by pi.

Pi is the ratio of the circumference of a circle to its diameter; it can be calculated as circumference divided by diameter, or circumference/diameter. It is an irrational number which starts 3.14159265358979323846264338327050..., but it is usually approximated to 3.14 or 22/7, though using the [π] button on a calculator makes it easier to enter a fairly accurate value.

circumference = pi*diameter or pi = circumference/diameter

circumference = diameter X pi diameter = circumference/pi diameter = 55 mm/3.1416 diameter = 17.5 mm