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  23.56 in2 2. Find the area.

Slides:

Advertisements

Similar presentations

Sector Area and Arc Length

Advertisements

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 of a sector and segment of a circle

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

11-5 Area or Circles and Sectors Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson Quiz Lesson Quiz.

Distance around the circle 2  r = C or d  = C.

Sector Area and Arc Length

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.

Warm Up 1. Find w, y, and z. Give the answers in simplest radical form.

Sector Area and Arc Length

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

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

Holt Geometry 11-3 Sector Area and Arc Length 11-3 Sector Area and Arc Length Holt Geometry Warm Up Warm Up Lesson Presentation Lesson Presentation Lesson.

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.

6.1 Angles and Radian Measure Objective: Change from radian to degree measure and vice versa. Find the length of an arc given the measure of the central.

Circumference The distance around a circle or Find the circumference to the nearest tenth

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.

Perimeter and Area of Circles and Sectors I CAN -Find the circumference and area of a circle -Find the arc length of a sector -Find the area of a sector.

Holt McDougal Geometry 11-3 Sector Area and Arc Length Toolbox Pg. 767 (12-20; 33 why 4 )

1)Find the circumference and area of a circle with a diamater of 10 in. Round to the nearest hundredth. Do not forget the units! 2) What would be the radius.

Section 11-3 Sector Area and Arc Length. The area of a sector is a fraction of the circle containing the sector. To find the area of a sector whose central.

Objectives Find the area of sectors. Find arc lengths.

Sector Area and Arc Length

Do Now Agenda Homework Handout (10 problems)  Do Do Now!

Objectives Find the area of sectors. Find arc lengths.

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

Area of Circles & Sectors.

Sector Area and Arc Length

Sector Area and Arc Length

Sector Area and Arc Length

EOC REVIEW Question of the Day.

Sector Area and Arc Length

Sector Area and Arc Length

Circumference, Arc Length, Area, and Area of Sectors

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°?

12.3 Sector Area and Arc Length

Sector Area and Arc Length

Questions over hw?.

Sector Area and Arc Length

Sector Area and Arc Length

Exact Area and Circumference of Circles

ANSWERS WILL BE IN SQUARE UNITS

Objectives Find the area of sectors. Find arc lengths.

12.3 Sector Area and Arc Length

Sector Area and Arc Length

Objectives Find the area of 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?.

Sector Area and Arc Length

Warm Up: Do at the beginning of 12.3 notes

Sector Area and Arc Length

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

Sector Area and Arc Length

Sec Circumference and Arc Length p.649

Sector Area and Arc Length

Objectives Find arc lengths..

Sector Area and Arc Length

To Start: 12 Points Find the following for a circle with radius 5 cm. Leave your answer in terms of π! Diameter = ________ Circumference = ________ Area.

Sector Area and Arc Length

L.T. 11.3: Find the area of sectors

Sector Area and Arc Length

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

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.

Sector Area and Arc Length

Presentation transcript:

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  23.56 in2 2. Find the area of segment GJ to the nearest hundredth.

12.3 ARC LENGTH

In the same way that the area of a sector is a piece of the area of the circle, the length of an arc is a piece or portion of the circumference (distance) of the circle.

Find each arc length. Give answers in terms of  and rounded to the nearest hundredth. FG  5.96 cm  18.71 cm

 0.69 m  2.16 m

Assignment Pg. 412 19-20 Pg. 424 1, 3-11 Worksheet