Circumference And Area Of A Circle
Muhtasari
The circumference is the distance around a circle and the area is the surface it encloses, both governed by the constant \(\pi\). Extend these to a slice of the circle and you can find an arc length and the area of a sector.
In this lesson you will calculate the circumference and area of a circle, and the arc length and area of a sector, by treating a sector as a simple fraction of the whole circle.
Malengo
- Calculate the circumference and area of a circle, and the arc length and area of a sector.
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Hongera kwa kukamilisha somo la Circumference And Area Of A Circle. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
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- The circumference of a circle is given by: A. pi r squared B. 2 pi r C. pi r D. 4 pi r Answer: B
- The area of a circle is given by: A. 2 pi r B. pi d C. pi r squared D. pi r Answer: C
- The area of a circle of radius 7 (pi = 3.142) is about: A. 44.0 B. 153.9 C. 21.99 D. 49 Answer: B
- A sector with angle 72 degrees is what fraction of the circle? A. 1/4 B. 1/5 C. 1/6 D. 1/3 Answer: B
- Arc length of a sector is the whole circumference multiplied by: A. theta/180 B. theta/360 C. 360/theta D. theta Answer: B
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Vitabu Vinavyopendekezwa
Jifunze zaidi kutoka vyanzo huria
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Sehemu ya kitabu
Solve Geometry Applications: Circles and Irregular Figures
Use the properties of circles
"Prealgebra: Solve Geometry Applications: Circles and Irregular Figures" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/prealgebra/pages/9-5-solve-geometry-applications-circles-and-irregular-figures. Access for free at https://openstax.org/books/prealgebra/pages/1-introduction
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Sehemu ya kitabu
Angles
Draw angles in standard position.
"Algebra and Trigonometry: Angles" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/algebra-and-trigonometry/pages/7-1-angles. Access for free at https://openstax.org/books/algebra-and-trigonometry/pages/1-introduction
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