3.1416 metres
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Oh, dude, you're hitting me with some math here! So, the circumference of a circle is calculated using the formula C = 2πr, where r is the radius. Since the circle is 1 meter round, the radius is 0.5 meters. Plugging that into the formula, you get C = 2π(0.5) = π meters, or about 3.14 meters. So, like, the circumference of a 1 meter round circle is approximately 3.14 meters.
same length + 6.28 meters the reason: the formula for circumference of a circle is 2pi*Radius Thus, if you want to raise by 1 meter you just add another 2pi meters. The amount it takes to raise 1 meter is independent of the initial circumference. 2*pi = 6.28
The circumference of an 8-inch circle is: 25.1 inches.
If the radius is 1, the diameter is 2, and the circumference is about 6.28. Since the area of a circle is πr^2, a circle with r=1 would have an area of π.
Circumference = pi x diameter. So the circumference of a circle with diameter 12 cm = pi x 12 = 37.7 cm (1 decimal place.)