WebMar 9, 2024 · 1 answer The formula for the circumference of a circle is C = 2πr, where r is the radius of the circle and π is a mathematical constant approximately equal to 3.14. Substituting the given radius of 4.5 in the formula, we get: C = 2π (4.5) C = 9π C ≈ 28.27 Therefore, the circumference of a circle with a 4.5 radius is approximately 28.27 units. WebArea of a circle: A = π r 2 = π d 2 /4 Circumference of a circle: C = 2 π r = π d. Circle Calculations: Using the formulas above and additional formulas you can calculate properties of a given circle for any given variable. Calculate …
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Webradius r1 = radius r2 = Let pi π = Units Significant Figures Answer: outer radius r 1 r 1 = inner radius r 2 r 2 = outer circumference C 1 C 1 = inner circumference C 2 C 2 = outer circle area A 1 A 1 = inner circle area A 2 A 2 = annulus area A 0 A 0 = Get a Widget for this Calculator © Calculator Soup Share this Calculator & Page Annulus Shape WebCircle Calculator Choose a Calculation radius r = Let pi π = Units Significant Figures Answer: radius r = 12 in diameter d = 24 in circumference C = 75.3982237 in area A = 452.389342 in 2 In Terms of Pi π circumference C … smart agency in australia
Circumference Of A 4.5 Inch Circle - mycalcu.com
WebMar 7, 2013 · Hence, the circumference of a circle with radius 4 m would be: C = 2*pi*4 = 8*pi Rounded to 2 decimal places, this comes to 25.13 m . Hope this Helps. If a radius of a circle is 12 meters what is its diameter? 24 meters.The diameter is twice the radius.Both radius and diameter are straight lines. The radius extends from the center of the circle ... WebAnswer (1 of 4): As stated, the question is meaningless. The intent, however, is probably to determine the arc length of 45° worth of a circle whose radius is 5 cm. To do that, we … WebThe circumference of a circle with radius 4.5 is 28.27(*) Formulas: r = 4.5 d = 9 C = 28.3 C = 2·π·r C = π·d C = √ 4·π·A π = 3.1415 A = area of the circle C = circumference or perimeter … smart agent scam