Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference....

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Question #1 Don’t forget your units!!! Find the circumference of the circle below. a. Give an exact answer in terms of π . b. Use theπ button on your calculator and express your answer to the nearest hundredth.

Transcript of Lancaster High School · Web viewThe area of a circle is 121π cm 2 . Find its circumference....

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

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

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

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

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

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

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

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

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

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

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.


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Math: Find the area of a circle.

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How can you find the circumference of a circle if you only know the area? For Example A circle has an area 16 π cm 2. What is the circumference of the.

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Practice Test Part 1 · 2014. 5. 4. · Find the lateral area. F 108 cm! H 162 cm! G 144 cm! J 324 cm! 9. Find the surface area. A 108 cm! B 144 cm! C 162 cm! D 324 cm! 10. Find the

Practice Test Part 1 · 2014. 5. 4. · Find the lateral area. F 108 cm! H 162 cm! G 144 cm! J 324 cm! 9. Find the surface area. A 108 cm! B 144 cm! C 162 cm! D 324 cm! 10. Find the

6cm 1) Find the area of this circle: 6cm. 1) Find the area of this circle: Area = r ² = x 3 ² = 28.3 cm ² 6cm A)28.3cm².

6cm 1) Find the area of this circle: 6cm. 1) Find the area of this circle: Area = r ² = x 3 ² = 28.3 cm ² 6cm A)28.3cm².

Finding the Area of a Circle - Common Core Sheets of... · 5. 7.07 cm 2 6. 415.48 cm 2 7. 314.16 cm 2 8. 78.54 cm 2 9. 254.47 cm 2 10. 452.39 cm 2 Find the area of each circle. Circles

Finding the Area of a Circle - Common Core Sheets of... · 5. 7.07 cm 2 6. 415.48 cm 2 7. 314.16 cm 2 8. 78.54 cm 2 9. 254.47 cm 2 10. 452.39 cm 2 Find the area of each circle. Circles

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PART I Summer Assignment...A. Find the area of the segment of a circle of radius 12 cm cut off by a chord of length 10 cm. B. Two circles of radii 15 cm and 8 cm have their centers

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CONFIDENTIAL 1 Geometry Lines and Angles. CONFIDENTIAL 2 Warm Up Find the circumference and area of each circle. 1) 2) 80 cm 3.8 m.

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6cm 1) Find the area of this circle: A)28.3cm² B)113.1cm² C) 37.7cm² D) 18.8 cm² 6cm A)28.3cm² B)113.1cm² C) 37.7cm² D) 18.8 cm².

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