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...
Learn about the formulas associated with the sector of a circle. Discover the definition of a sector and how to use both the arc length and sector...
In the diagram, OA B is a sector of a circle with centre O and radius 12 cm.The lines AX and BX are tangents to the circle at A and B respectively. Angle AOB1=3开 radians.A Xx rad CB12cm Find the exact length of AX, giving your answer in terms of √3. 相关知识点: 试题...
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 ...
What is the Sector in the circle? Consider two points A and B on a given circumference. A circular sector determined by those two points is a region of the circle delimited by the two radii that have A and B as endpoints and an arc from A to B. What is the perimeter of an arc?
Thearea of sectorof a circle is the space enclosed within the boundary of the sector. A sector always originates from the center of the circle. Let us learn more about thearea of sector formula, andhow to find the area of a sector in radiansand degrees. ...
The angle of the sector is 0 radians and the radius of the circle is rcm.(a) Find an expression for 0 in terms of r.田The perimeter of the sector is 24.48cm.(b) Showthatθ=(24.48)/r-2田(c) Find the possible values of r.[3] ...
11 The diagram shows a sector o f a circle o f centre O. The angle subtended at the centre o f the circle is 45° and the are a o f the sector ABO is 10 cm2.B45°O f à(a) Convert 45° to radians, leaving your answer in terms o f π.Answer ... [1]..(b)Find ...
Amber2) The diagram shows a sector OAB of a circle, centre O and Oradius 7.3 cm.7.3 cm Given that the are a of the sector is 38.4 cm2, find AB a) the size of ∠AOB in radians,b) the perimeter of the shaded segment 相关知识点: ...
Area of a Sector of a Circle: SMART Board Resource for Geometry (Grades 6-12) (eLesson Plan)