Area of a Sector of a Circle: SMART Board Resource for Geometry (Grades 6-12) (eLesson Plan)
In order to find the total space enclosed by the sector, we use thearea of a sectorformula. The area of a sector can be calculated using the following formulas, Area of a Sector of Circle = (θ/360º) ×πr2, where, θ is the sector angle subtended by the arc at the center, ...
Question: The area of a sector of a circle of radius {eq}r {/eq} and angle {eq}30^\circ {/eq} is {eq}\dfrac{1}{2}r^2(30) = 15r^2 {/eq}. The Area of a Sector of a Circle In geometry, we learn that a portion or a slice of a circle is ...
Area of a Sector of a Circle:is a piece (or slice) of the total area of a circle. The two formulas that you will generally see for the area of a sector of a circle with radius, r, subtended by a central angle, {eq}\theta {/eq}: ...
结果1 题目 The sector of a circle shown at left has center C. The total area of the sector is 500. In addition, (arc \ ABD) has length 40. What is the length, l, of line segment (AC)? ( ) A. 12.5 B. 16 C. 20 D. 25 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
So, what's the area for the sector of a circle: α→ Sector Area From the proportion, we can easily find the final sector area formula: Sector Area = α×πr² / 2π = α× r² / 2 The same method may be used to find arc length – all you need to remember is the formul...
If a sector of a circle has an area of π units squared and the measure of its central angle (in degrees) is an integer, then the radius of the circle must be: ( ) A. π B. π^2 C. 6 D. 10 E. 36 相关知识点: 试题来源: 解析 C π=((360))π r^21=(360)r^2360=nr^2...
To find the Arc Length and Sector Area of a circle, you need the formulas and in this article, we review and explain these formulas.
In summary, the formula to find the area of a sector in a circle is A = (πr^2θ)/360, where θ is the central angle in degrees. If θ is in radians, the formula becomes A = (r^2θ)/2. The sector area is simply a fraction of the total area of the circle. ...
A Sector Area Calculator is a tool that calculates the area of a sector of a circle. A sector is a portion of a circle enclosed between two radii and an arc. Enter Information Enter Information: Enter the central angle (in degrees): Enter the radius of the circle: Calculate ...