In geometry, the circumference (from Latin circumferens, meaning "carrying around") is the perimeter of a circle or ellipse. Circumference. The area (A) of a circle is how much space the circle takes up or the region enclosed by the circle. So we have (2)(π)(2) which is equal to 4π units. Guest Aug 17, 2017 #2 +178 +1 . The circumference of the circle is just a percentage of the circumference (perimeter) of the square, and it's the same percentage no matter what the size. 3.94476 × 10 5 square inches (in²) Use the this circle area calculator below to find the area of a circle given its circumference, or other parameters. Area of a circle is defined as π r2 and the diameter as 2r. well if the formula for area is π*r^2 . A circle is the set of all points in a plane that are a fixed distance, called the radius, from a fixed point, called the center. Circumference may also refer to the circle itself, that is, … Anonymous. Radius = Diameter / 2 = 6 / 2 = 3. Volumes are measured in cubic units like cm³, feet³ etc Circumference of (the same) circle = 2 π r. given the area, solve for r...then calculate the circumference [your teacher has given you an 'approximation' for π ] Answer: 12.56 units Step-by-step explanation: To find the circumference of a circle, start with the formula for the circumference of a circle which is shown below. The diameter of a circle is the straight line passing through the center of the circle. The area is measured in units units such as square centimeters $(cm^2)$, square meters $(m^2)$, square kilometers $(km^2)$ etc. circumference = 2 * pi * radius. Length width distance breadth height perimeter circumference is measured plain units like cm, feet etc. Answer Save. Diameter = Circumference / Pi = 6Pi / Pi = 6. Hope that helps :) 0 0? 4 Answers. Areas are measure in square units like cm², feet² etc. So the circumference is 14π units. 10 years ago. Relevance. Given any one variable A, C, r or d of a circle you can calculate the other three unknowns. Plugin the value and you can solve problem c. As for problem d, circumference is 2πr, … what is the circumference of a circle if the area is 1384.74 units squared? √ = square root Calculator Use. To calculate the area, you just need to enter a positive numeric value in one of the 3 fields of the calculator. Notice that here, the radius of our circle is 2 units. Area of a circle = π r². It is also called as the longest chord of the circle. This online diameter to circumference converter helps you to find the perimeter value from the given diameter at desired units. Area = Pi x 3^2 = 9Pi square units. 6 years ago. More generally, the perimeter is the curve length around any closed figure. Use this circle calculator to find the area, circumference, radius or diameter of a circle. That is, the circumference would be the arc length of the circle, as if it were opened up and straightened out to a line segment. the radius. If radius is in centimeters, as (2 * pi) is a number without . The circumference of the circle -- the line around the outside of the circle -- can be calculated in the same way. Units: Note that units of length are shown for … Circumference or perimeter of a circle is defined as the distance around it. Both area and perimeter can be calculated with simple formulas using … The circumference (C) of a circle is its perimeter, or the distance around it. Believe it or not, that percentage is 78.5% again. Conclusion : The unit of the circumference is the same as the unit of. Diameter = Circumferece / ? So we can plug in 2 for r in the formula. ***** any specific unit, the circumference is in centimeters too. ... the formula is pi x radius squared (?r²) yet with the intention to try this, you should first locate the diameter. 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