"Arc Length and Sector Area" Circle PPT Courseware 3

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"Arc Length and Sector Area" Circle PPT Courseware 3

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Question: Given that the radius of ⊙O is R, find the length of the arc subtended by the central angle of n°.

(1) What is the length of the arc subtended by the central angle of 1°?

(2) How many times is the length of the arc subtended by a central angle of n° longer than the arc length subtended by a central angle of 1°?

(3) What is the length of the arc subtended by the central angle n°?

Given that the radius of ⊙O is R, find the area of ​​the sector with central angle n°?

(1) The area of ​​a circle can be regarded as the area of ​​the sector subtended by the central angle of what degree?

(2) What is the area of ​​a sector with a central angle of 1°?

(3) How many times the area of ​​a sector with a central angle of n° is that of a sector with a central angle of 1°?

(4) What is the area of ​​a sector with a central angle of n°?

Small scale chopper

1. It is known that the radius of the arc is 30 cm and the central angle is 60°, then the length of the arc is ___

2. Given a sector with a radius of 2 and an area of ​​___, the measure of its central angle is ___.

3. Given a sector with a radius of 2 and an area of ​​___, the arc length of this sector =____.

4. As shown in the figure, place one side of the square ABCD with side length 2 on the fixed line L, and rotate it clockwise around point D to the position as shown in the figure, then the path from point B to point B′ will be The length is ________

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For more information about the "Arc Length and Sector Area" PPT courseware, please click on the Arc Length and Sector Area ppt tab of the circle ppt.

"Calculation of arc length and sector area" PPT courseware:

"Calculation of arc length and sector area" PPT courseware 1. The figure formed by an arc and two radii passing through the endpoints of the arc is called ________. 2. In a circle with radius r, let the length of the arc subtended by the central angle n be l, and the area of ​​the sector with central angle n be S, then:..

"Arc Length and Sector Area" Circle PPT Courseware 2:

"Arc Length and Sector Area" Circle PPT Courseware 2 Learning Objectives Understand the concept of sector, understand the calculation formulas of arc length and sector area subtended by the central angle of n, and apply these formulas to solve related problems. Self-study textbook P120----P121, think about the following contents: (1)..

"Arc Length and Sector Area" Circle PPT Courseware:

"Arc Length and Sector Area" Circle PPT Courseware 1. Do you still remember the formula for calculating the circumference of a circle? 2. How many degrees can the circumference of a circle be regarded as the length of the arc subtended by the central angle of the circle? 3. What is the length of the arc subtended by the central angle of 1? 4. What is the central angle of n? The circumference of a circle with radius R..

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Update Time: 2024-11-19

This template belongs to Mathematics courseware People's Education Press Ninth Grade Mathematics Volume 1 industry PPT template

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