Geometry Warm ups 2. 3.. 10-7 AREAS OF CIRCLES AND SECTORS (DAY 2) Objective: To find the areas of circles, sectors, and segments of circles.

Slides:

Advertisements

Similar presentations

Geometry Sector Area and Arc Length

Advertisements

GEOMETRY HELP Because the diameters are in different units, convert 1 ft to 12 in. The radius of the archery target is 1 ft = 12 in. The area of the archery.

Geometry Warm ups.

TODAY IN GEOMETRY…  Warm up: Writing equations of a circle  Learning Target : 11.4 You will find the arc length and circumferences of circles  Independent.

Area and Circumference of Circles

Section 7-7 Circles and Sectors SPI 32L: determine the area of indicated regions involving circles SPI 33B: find the area of a sector of a circle given.

L.E.Q. How do you find the areas of circles, sectors, and segments of circles?

Areas of Segments of Circles SWBAT: To find the areas of segments of circles.

10.7 Areas of Circles and Sectors

Section 7 –7 Areas of Circles & SEctors

Answers to homework problems – page 8

105  32   16  36.5  105  Warm-up Find the measures of angles 1 – 4.

TODAY IN GEOMETRY…  Review: Arc Length  Learning Target : 11.5 You will find area of circles and sectors  Independent practice.

TODAY IN GEOMETRY…  Review: Arc Length  Learning Target : 11.5 You will find area of circles and sectors  Independent practice.

Geometry Warm ups AREAS OF CIRCLES AND SECTORS Objective: to find the areas of circles, sectors, and segments of circles.

Section 7-7: Circles: Area of circles, sectors, and segments April 10, 2012.

7.2 What’s The Area? Pg. 8 Areas of Circles and Sectors.

11.5 – Areas of Circles and Sectors. Area of a Circle: A=  r 2.

Warm up: Solve for x 18 ◦ 1.) x 124 ◦ 70 ◦ x 2.) 3.) x 260 ◦ 20 ◦ 110 ◦ x 4.)

Warm up: Solve for x 1.) 2.) 4.) 3.) 124◦ 70◦ x 18◦ x 260◦ x 20◦ 110◦

Shaded Area/ Word Problems

Entry Task. Learning Target: I can….. … work with the relationship between the dimensions of and the circumference and area of circles. (Sec. 10.6/10.7)

Chapter 10: Area 10.7 Areas of Circles & Sectors.

10.7 Area of Circles and Sectors Brett Solberg AHS ‘11-’12.

Circumference & Arc Length of Circles. 2 Types of Answers Rounded Put mode on classic Type the Pi button on your calculator Round Exact Put mode on mathprint.

Geometry Warm Up CIRCLES AND ARCS Objective: To find the circumference and arc length.

Volume of cones.

Objective: Use Pythagorean theorem.. Example 1.

Warm up. 2 Types of Answers Rounded Type the Pi button on your calculator Toggle your answer Do NOT write Pi in your answer Exact Pi will be in your.

Chapter 7 Lesson 7 Objective: To find the areas of circles, sectors, and segments of circles.

Warm-Up 1.Find the circumference of a circle with a diameter of 10ft. Round your answer to the nearest tenth. 2.Find the circumference of  A if the radius.

Warm up: Solve for x 18 ◦ 1.) x 124 ◦ 70 ◦ x 2.) 3.) x 260 ◦ 20 ◦ 110 ◦ x 4.)

Math II UNIT QUESTION: What special properties are found with the parts of a circle? Standard: MM2G1, MM2G2 Today’s Question: How do we find arc length.

Warm Up 4. Label the circle with the following parts: radius, diameter, circumference.

Recall Area of a Circle A = r2

Holt Geometry 1-5 Using Formulas in Geometry Warm Up Evaluate. Round to the nearest hundredth () 6. (3) 2.

Geometry 7-R Unit 7 Area Review Problems

Holt Geometry 9-3 Composite Figures Warm Up Find the area of each figure. 1. a rectangle in which b = 14 cm and h = 5 cm 2. a triangle in which b = 6 in.

Area of a circle.

10.7 Areas of Circles and Sectors

Area of Circles & Sectors.

Circles: Circumference & Area

Algebra 1 Warm ups #4.

2 Types of Answers Exact Rounded Use the Pi button on your calculator

Lesson 20.1 Justifying Circumference and area of a circle

Objective: Find the circumference and area of circles

Warm-Up A circle has a diameter of 10 in. What is the arc length in radians of a sector with 135°? What is the arc length in radians of a sector with 95°?

Circles: Circumference & Area

Questions over hw?.

Warm Up #1 Find each measure. Give answers in terms of  and rounded to the nearest hundredth. 1. area of sector LQM 7.5 in2  in2 2. Find the area.

Circumference Definition: The distance around a circle. It’s a special word for perimeter. Picture:

Exact Area and Circumference of Circles

ANSWERS WILL BE IN SQUARE UNITS

9-2 and 11-3: Perimeter and Area of Circles and Sectors

Warm up: Solve for x 1.) 2.) 4.) 3.) 124◦ 70◦ x 18◦ x 260◦ x 20◦ 110◦

Sector Area and Arc Length

Questions over hw?.

Questions over hw?.

7-7 Areas of Circles and Sectors To find the areas of circles, sectors, and segments of circles With the formula for the area of a circle, students.

Warm Up #1 Find each measure. Give answers in terms of  and rounded to the nearest hundredth. 1. area of sector LQM 7.5 in2  in2.

Sector Area and Arc Length

EOCT REVIEW #2 Circles – Angles, Arcs, Area of a Circle, Area of a Sector, Circumference, Arc Length, & Segments.

Solve for the leg and round the nearest tenth.

Area of Regular Polygons and Circles

Warm up: Solve for x 1.) 2.) 4.) 3.) 124◦ 70◦ x 18◦ x 260◦ x 20◦ 110◦

Warm up: Solve for x 1.) 2.) 4.) 3.) 124◦ 70◦ x 18◦ x 260◦ x 20◦ 110◦

Circle Review Bingo The solutions are linked. Click on the answer on the next slide and it will jump you to the slide that is the question to the solution.

Unit 4: Circles and Volume

Presentation transcript:

Geometry Warm ups 2. 3.

10-7 AREAS OF CIRCLES AND SECTORS (DAY 2) Objective: To find the areas of circles, sectors, and segments of circles.

Segment of a Circle

Problem 1 (equilateral) What is the area of the shaded segment shown at the right? Leave your answer in terms of.

Problem 2 (right) What is the area of the shaded segment shown? Leave your answer in terms of

Problem 3 (120 o ) What is the area of the shaded segment shown? Round your answer to the nearest tenth.

Try with a partner Find the area of the shaded region of the circle. Leave your answer in terms of pi.

Homework Pg. 664 # 23 – 31,