lancaster high school · web viewthe area of a circle is 121π cm 2 . find its circumference....
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![Page 1: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/1.jpg)
Question #1Don’t forget your units!!!
Find the circumference of the circle below. a.Give an exact answer in terms of π.
b.Use the π button on your calculator and express your answer to the nearest hundredth.
![Page 2: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/2.jpg)
Question #2Don’t forget your units!!!
a. Find the perimeter (circumference) of the semicircle. Round your answer to the nearest tenth. (d = 17 in.)b. Find the area of the semicircle to the nearest tenth.
![Page 3: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/3.jpg)
Question #3Don’t forget your units!!!
The area of a circle is 121π cm2. Find its circumference.
![Page 4: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/4.jpg)
Question #4Don’t forget your units!!!
A circle has a radius of 2cm.
a. Find the area of the circularregion in terms of π.
b. Find the circumference of the circular region in terms of π.
![Page 5: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/5.jpg)
Question #5Don’t forget your units!!!
A circle has a radius of 7 cm.
a. Find the exact area of the circular region in terms of π.
b. What is the circumference of the circle?
![Page 6: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/6.jpg)
Question #6Don’t forget your units!!!
Joan determined that the area of the circle below is 400 π cm2. Melinda says that Joan’s solution is incorrect; she believes that the area is 100π cm2. Who is correct and why?
d = 20 cm.
![Page 7: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/7.jpg)
Question #7Don’t forget your units!!!
The area of a circle is 36 π cm2.
a. Find its radius.
b. Find its diameter.
c. Find its circumference.
![Page 8: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/8.jpg)
Question #8
The circumference of a circle is 9 πcm.
a. What is the diameter?
b. What is the radius?
c. What is the area?
![Page 9: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/9.jpg)
Question #9
Mark created a flowerbed that is semicircular in shape, as shown in the image. The diameter of the flower bed is 5 m.
a.What is the perimeter of the flower bed?
b. What is the area of the flowerbed?
![Page 10: Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference. Question #4 Don’t forget your units!!! A circle has a radius of 2 cm. a. Find the area](https://reader038.vdocuments.net/reader038/viewer/2022100623/6033f2800418df7fdc3f2e21/html5/thumbnails/10.jpg)
Question #10
The figure below shows a circle inside of a square. If the radius of the circle is 8cm, find the following and explain your solution.
a.The circumference of the circle.
b.The area of the circle.
c. The area of the square.