what is the radius of a circle
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Let O be the centre and r be the radius of the circle. Similarly, if you enter the area, the radius needed to get that area will be calculated, along with the diameter and circumference. find the cost of fencing the plot at Rs 10 per metre. Sometimes the word 'radius' is used to refer to the line itself. If you have two or more of them, they are referred to as radii. (10 points); A disk of radius 132 mm is oriented with its normal unit vector at 30º to a uniform electric field of magnitude 2.23 x 10 3 N/C. The area of a circle is: π ( Pi) times the Radius squared: A = π r2. In other terms, it simply refers to the line drawn from the center to any point on the circle. Furthermore, the circumference is the distance around the circle. check_circle Expert Answer. If the diameter ( d) is equal to 10, you write this value as d = 10. Hence AB = 2 × 10 ⇒ AB = 20 cm. Radius of a circle is generally abbreviated as ‘$$r$$’. Check out a sample Q&A here. View Solution: Latest Problem Solving in Analytic Geometry Problems (Circles, Parabola, Ellipse, Hyperbola) More Questions in: Analytic Geometry Problems (Circles, Parabola, Ellipse, Hyperbola) Online Questions and Answers in Analytic Geometry … Since the radius of this this circle is 1, and its center is the origin, this picture's equation is. What is the radius of a flat circle when it is placed in a uniform electric field magnitude of 4.6 x 10 2 N/C? The Electric Flux Through The Circle When Its Face Is 45° To The Field Lines Is 74.49 Nm2/C. Hence distance between parallel tangents is 20 cm The radius of a circle when the circumference is given is the distance from the center outwards provided the value of circumference is given is calculated using. In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.The name comes from the Latin radius, meaning ray but also the spoke of a chariot wheel. Use the calculator above to calculate the properties of a circle. A chord passing through the center of a circle is known as the diameter of the circle and it is the largest chord of the circle. For example: enter the radius and press 'Calculate'. A diameter is just two radiuses drawn in opposing directions from the circle's origin. In the figure above, click 'reset' and drag the orange dot. 1. From prior knowledge, We know that, among all line segments joining the point O i.e. Radius means the straight line distance from the center of a circle to its edge. or, when you know the Diameter: A = (π /4) × D2. The area, diameter and circumference will be calculated. This diameter is twice that of the radius of a circle i.e. Problem Answer: The radius of the circle is 5. What is Radius of a circle when circumference is given? Circumference of Circle is the distance all the way around the circle. See Then area of the circle = π r 2 = 3.14 x 5 x 5 = 78.5 cm 2. Want to see this answer and more? In that sense, you may see "draw a radius of the circle". The radius is half the diameter, so the radius is 5 feet, or r = 5. To calculate the radius of the circle when the circumference is given, you need to divide the circumference by the product of pi and 2. Radius is a line from the center of a circle to a point on the circle or the distance from the center of a circle to a point on the circle. Drag either orange dot at the ends of the diameter line. Click on "show diameter". Circumference of a circle is the enclosing boundary of that circle. The Center-Radius Form of a Circle. A circle of radius = 12 or diameter = 24 or circumference = 75.4 mm has an area of: 4.524 × 10 -10 square kilometers (km²) 0.0004524 square meters (m²) 4.524 square centimeters (cm²) Radius is given 10 cm. [2] X Research source The symbol π{\displaystyle \pi } ("pi") is a special number, roughly equal to 3.14. Radius of a circle = Diameter/2 $$(y-0)^2 + (x-0)^2 = 1^2 \\ y^2 + x^2 = 1$$ Practice 2. Dimensions of a Circle. According to the question AB = OA = OB = r. Now triangle OAB is an equilateral triangle. Expert Answer . Radius of a circle when circumference is given calculator uses Radius=(Circumference of Circle)/(pi*2) to calculate the Radius, The radius of a circle when the circumference is given is the distance from the center outwards provided the value of circumference is given. What is a Circle's Radius? ∴ ∠AOB = 600. Show transcribed image text. A = area of the circle. A circle is a set of all points in a plane that are all an equal distance from a single point, the center. A circle can have many radii (the plural form of radius) and they measure the same. or, when you know the Circumference: A = C2 / 4π. See the answer. The radius of a circle when the circumference is given is the distance from the center outwards provided the value of circumference is given and is represented as. The radius of a circle definition is the length of the line segment from the center of a circle to a point on the circumference of the circle. Furthermore, the circumference is the distance around the circle. The radius of a circle is the distance between the center point to any other point on the circle. The circle shown has a radius of 12 mm. D=2r, where ‘D’ is the diameter and ‘r’ is the radius. Therefore, the radius and the area of the circle are 5 cm and 78.5 cm 2 respectively. In the more recent sense, it is the length of the line, and so is referred to as "the radius of the circle is 1.7 centimeters". Hence the distance between the two parallel tangents will be the diameter of the circle. Notice that the radius is the same length at any point around the circle. The Radius is the distance from the center outwards.The Diameter goes straight across the circle, through the center.The Circumference is the distance once around the circle.And here is the really cool thing:We can say:Circumference = π × DiameterAlso note that the Diameter is twice the Radius:Diameter = 2 × RadiusAnd so this is also true:Circumference = 2 × π × RadiusIn Summary: The circumference of the circle = 31.4 cm ⇒ 2 π r = 31.4 ⇒ 2 x 3.14 x r = 31.4 ⇒r =31.4/(2 x 3.14) = 5 cm. How to calculate Radius of a circle when circumference is given using this online calculator? Answer. Area of a circle segment (given central angle), Area of a circle segment (given segment height), Basic Equation of a Circle (Center at origin), General Equation of a Circle (Center anywhere), Radius of an arc or segment, given height/width. (a) What is the electric flux through the disk? Radius means the straight line distance from the center of a circle to its edge. The area, diameter and circumference will be calculated. Circumference TOPIC IS ELECTRIC FLUX please provide given and simple solution . Since the radius of this this circle is 1, and its center is (1, 0), this circle's equation is. Enter any single value and the other three will be calculated.For example: enter the radius and press 'Calculate'. The plural form is radii (pronounced "ray-dee-eye"). The electric flux through the circle when its face is 45º to the field lines is 74.49 Nm 2 /C. 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