Pi times diameter is your answer. In this case, Pi is approximately 3.14 units and your diameter is 1 meter. So, 3.14 times 1 meter = 3.14 meters. What I like about using centimeters is that your answer is approximately 3 meters and 14 centimeters. This is a rounded answer of course since the approximation of Pi is 3.14 and the decimal part goes on forever.
1
50 centimeters
About 34.56m
pi ( = 3.1416 approx) metres.
Assuming the question refers to a circle with a diameter of 0.9 metres, the circumference is 2.83 m = 2.8 metres to the nearest tenth.
The process you would use to find the circumference of a circle completely depends on what information you already have about the circle. For example, you might be given the circle's area, or its radius, or its diameter, or the length of one radian of arc along the circumference, and each of those would require a different method to find the circumference. The easiest example is the one where you know the circle's diameter. In that case, simply multiply the diameter by (pi) to get the circumference. The next easiest case is the one where you have the circle's radius ... let's say the radius is 1.5 meters. Knowing that the radius is half of the diameter, you first double the radius, and find that the diameter 3.0 meters. Then you get the circumference just as you did in the first example ... multiply the diameter by (pi). With a radius of 1.5 meter, you would find that the circumference is about 9.425 meters. (rounded)
The circumference of a 9.5-meter diameter circle is: 29.85 meters. (C = d x Pi)
diameter = circumference/pi
The diameter of a circle with a 3-meter circumference is: 0.9549 meters.
The diameter of a circle with a 12 meter circumference is approximately 3.82 meters.
50 centimeters
if a circle has an 18 meter diameter, then it has a 9 meter radius the circumference of a circle is 2(pi)r so the c. would be 2(pi)(9) which is 18pi. (another way to think of circumference is the diameter times pi)
A 0.5 meter-diameter circle has a circumference of about 1.57 meters.
The circumference of a 31.4-meter diameter circle is about: 98.6 meters.
About 34.56m
Circumference of a circle = 2*pi*radius or diameter*pi
The circumference of a circle with a diameter of 18 metres is 56.5 metres, approx.
circumference = diameter X pi pi = 3.1416 circumference = one meter X 3.1416 = 3.1416 meters