The radius of a circle is defined as a line segment that joins the center to the boundary of a circle. The distance from the center point to any endpoint on the circle is called the radius of a circle. Learn about the radius formulas with solved examples
Are you a student or a teacher? I am a student I am a teacher Recommended Lessons and Courses for You Related Lessons Related Courses Centroid & Center of Mass of a Semicircle | Overview & Examples Area of a Sector | Formula & Examples Volume & Surface Area of a Sphere | Formula...
To determine the volume of the hollow sphere, we need to subtract the volume of the hollow region from the volume of the entire sphere with radius r and R respectively. To find the volume of a solid sphere we use the formula 4/3π r3. And to find the volume of the hollow sphere we...
If a glacier was at the equator, this r value would be the radius of the Earth plus the height of the mountain. WIRED, 4 Sep. 2022 No matter how tall the N is, the radius of the sector will always be 1: That’s the length of the needle. Patrick Honner, Quanta Magazine, 29 ...
To find the area of a circle with a given radius, we can use the formula: Area of a Circle = πr² Where:-π (pi) is a constant approximately equal to 3.14,- r is the radius of the circle. 1. Identify the radius: The radius given is r=√5 cm. 2. Substitute the radius in...
<p>To solve the problem, we will find the length of the arc and the area of the sector formed by the arc in a circle with a radius of 21 cm, where the arc subtends an angle of 60 degrees at the center.</p><p>1. <strong>Formula for Length of Arc:</strong>
A sector is a pie-slice portion of a circle bounded by two radii and an arc of the circle’s edge connecting the two radii. You can find thearea of a sectorusing the formula: A =r² ×θ/2 The areaAis equal to the radiusrsquared times the central angleθin radians, divided by...
Ask a question Search AnswersLearn more about this topic: Area of a Sector | Formula & Examples from Chapter 6 / Lesson 14 82K Understand what the area of a circular sector is & how to find its area. Calculate the area ...
To find the area of a circle, you take pi times the radius squared, or A = pi r^2. Using this formula, you can find the area of a circle if you know the radius -- or the diameter -- by plugging in your values and solving for A. Pi is approximated as 3.
If we solve this formula for r, we get r=C2π, and this provides a formula we can use to find the radius of a circle given its circumference.Answer and Explanation: We are given that the circumference of a circle is 30 centimeters, ...