WebThe length of the arc of the sector need to be the same length as the circumference of the circle on the bottom of the cone. You just need to work out the length of the circumference of the circle and equate it to the length of the arc of the sector in terms of theta(the angle of the sector) and then solve for theta. WebFeb 20, 2011 · The circumference is equal to 2 times 5 times the radius. So it's going to be equal to 2 times pi times the radius, times 3 meters, which is equal to 6 meters times pi or 6 pi meters. 6 pi meters. Now I could multiply this out. Remember pi is just a number. Pi is 3.14159 going on and on and on.
How to Determine the Geometry of a Circle - ThoughtCo
WebMar 19, 2024 · If the diameter is drawn into your diagram, you can measure it with a ruler. Alternatively, you may just be told the value of the diameter. Assume for this example that the diameter of your circle is 20 inches. 2 Divide the diameter in half. Remember that the diameter is equal to double the radius. WebMar 29, 2024 · Since a circle has 360 degrees total, dividing the central angle by 360 degrees gives you the portion of the circle that the sector represents. Using this information, find what portion of the circumference the arc length represents. For example, simplify the formula to get: 6 Multiply the two numbers together. This gives you the length of the arc. bixby sovellus
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WebThe formula for circumference using the diameter is, in fact, a lot simpler: C = πd In this formula, C refers to the circumference of the circle while d refers to the diameter of the circle. Simply put, you can solve for the circumference of a circle by multiplying the value of the diameter by the constant value of pi. WebThe circumference of a circle and the area of a circle have one thing in common: the radius. If I were you I'd do it in two steps: - first calculate the radius using the circumference formula, - then calculate the area using the radius you just calculated :-) Hope that helps! WebWell, we know that the diameter times pi, we know that pi times the diameter is equal to the circumference; is equal to 10 meters. So to solve for this we would just divide both sides … bixby south dakota