WebThe radius, diameter, and circumference of a circle are all related through the mathematical constant π, or pi, which is the ratio of a circle's circumference to its diameter. The value of π is approximately 3.14159. π is an irrational number meaning that it cannot be expressed exactly as a fraction (though it is often approximated as ) and ... WebAug 23, 2024 · The circumference of a circle is B inches. The radius of the same circle is 4.5 inches. Which expression best represents the value of л? A b/4.5 B 4.5/a C b/9 D 9/b Advertisement ij775d5hxy Answer: C. b/9 Explanation: Advertisement Advertisement
Find the circumference of a circle if the radius is 4.5 inches ...
WebCircumference of a Circle Calculator. Use this calculator to easily calculate the circumference of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc. If you know the diameter, first … WebSep 27, 2011 · See answer (1) Best Answer. Copy. Diameter = Circumference/pi. So diameter = 4.5/pi = 1.43 inches. Wiki User. ∙ 2011-09-27 09:44:21. This answer is: Study … rby-co2传感器
Circumference of a 45 Foot Diameter Circle - CalculateMe.com
Web12 inches. In the diagram below, Θ is measured in radians. Which equation represents the relationship between the radius, r, and arc length, s? s = Θ · r. Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. Substitute the values d1 = 1, C1 = π, and d2 = 2r into the proportion. Which ... WebJan 8, 2024 · Calculate the arc length according to the formula above: L = r * θ = 15 * π/4 = 11.78 cm. Calculate the area of a sector: A = r² * θ / 2 = 15² * π/4 / 2 = 88.36 cm². You can also use the arc length calculator to find … WebDec 14, 2024 · How to find the circumference of a circle. Determine the radius of a circle. Let's assume it's equal to 14 cm. Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm. You can also use it to find the area of a circle: A = … A circle is a simple, distinctive shape with many unusual properties: Has the … rby-co2二氧化碳传感器