Warm up A pizza shop sells pizza by the slice. They make two different sizes of pizza – a 14-inch pizza which they cut into 60-degree slices and a 16-inch.

Slides:

Advertisements

Similar presentations

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.

Advertisements

Warm Up 1. Solve for arc ABC 2. Solve for x and y. 244  x = 105  y = 100 

Warm Up 1. Solve for arc ABC 2. Solve for x and y. 244  x = 105  y = 100 

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

CIRCUMFERENCE: or If you unwrap a circle, how long will the line be?

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.

The area of the circle is about 227 m 2. COURSE 2 LESSON 8-4 Find the area of the circle to the nearest unit. = (8.5) 2 Substitute 8.5 for the radius.

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◦

Chapter 10: Area 10.7 Areas of Circles & Sectors.

Warm Up April 24 th 1.What is the formula for the inscribed angle? 2.What is the formula for a vector outside the circle?

1. Find the. C A 172  Warm up – Round to the nearest hundredth. B 2. Find the radius. 4. Find the arc length of 3. Find the circumference.

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

Geometry Honors Section 5.3 Circumference and Area of Circles

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.

11.5 Sectors and Arc Lengths

7-2 Sectors of Circles Objective: To find the arc length of a sector of a circle and to solve problems involving apparent size.

Area Circumference Sectors

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.)

Geometry Honors Section 5.3 Circumference and Area of Circles.

Warm Up 1. Solve for arc ABC 2. Solve for x and y. 244  x = 105  y = 100 

Opening Activity 1. What is the area of a rectangle with a length of 5 inches and a width of 12 inches? (Remember: A=lw) A=lw A=(5)(12) 2. What is the.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

Area Circumference Sectors

Area of a circle.

A little more practice You’ve got this! High five!

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

GSE Geometry: Arc, Angles, and Area.

Section 11.3 Notes: Areas of Circles and Sectors

EOC REVIEW Question of the Day.

11.6 Arc Lengths and Areas of Sectors

11.3 Areas of Circles and Sectors

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

Arc Length Sector Area.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

16. Find the value of x. x○ 170○.

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°?

Warm UP! Circle O has a radius of 20 feet. What is the length of arc KL? K 65o O L 20 ft.

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

9-5 Area of Circles Warm Up Problem of the Day Lesson Presentation

11.3 Sector Area and Arc Length (Part 1)

Questions over hw?.

Exact Area and Circumference of Circles

Lesson 6-1 Circles Obj: I can find the circumference and area of circles HWK: p all, even, 23 Vocab: 1) circle 2) radius 3) diameter 4)

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

11.1 Arc Length.

244 x = 105 y = 100 Warm Up 1. Solve for arc ABC

244 x = 105 y = 100 Warm Up 1. Solve for arc ABC

Lesson 6-1 Circles Obj: I can find the circumference and area of circles HWK: p all, even, 23 Vocab: 1) circle 2) radius 3) diameter 4)

Questions over hw?.

Central Angles & Their Measures

Questions over hw?.

3. Find the circumference. 4. Find the arc length of

244 x = 105 y = 100 Warm Up 1. Solve for arc ABC

11.1: Circumference and Arc Length

244 x = 105 y = 100 Warm Up 1. Solve for arc ABC

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◦

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

11-3 Area of Circles and Sectors

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.

Learning Target #20 Arc Length and Sector Areas

244 x = 105 y = 100 Warm Up 1. Solve for arc ABC

Presentation transcript:

Warm up A pizza shop sells pizza by the slice. They make two different sizes of pizza – a 14-inch pizza which they cut into 60-degree slices and a 16-inch pizza which they cut into 45-degree slices. They sell a slice of each one for the same price. Which is a better deal? Show your work.

Warm up 1. Find the . 172 2. Find the radius. C 172 2. Find the radius. 3. Find the circumference. 4. Find the arc length of B

More Working Backwards 1. A sector has an area of 64¶ cm.2 The arc is 90°. Find the measure of the radius. 16 2. A sector has an area of 40.5¶ yd.2 The arc is 45°. Find the measure of the radius. 18

Questions over hw?

Formulas to KNOW for the Test

Singing to Remember Angle Formulas If you’re happy and you know it

Tune: If you’re happy and you know it If the vertex is ON the circle, half the arc. If the vertex is IN the circle, half the sum. If the vertex is OUTSIDE, then you’re in for a ride, ‘Cause it’s half of the difference anyway.

Review for TEST

Question 1 of 19 Solve for x. A x◦ B 24 C

Question 2 of 19 Solve for x. 9x – 7 17x – 2

Question 3 of 19 Solve for x. 52 x

Question 4 of 19 Solve for x. 76 152 x

Question 5 of 19 Solve for x. 110 x – 32 40

Question 6 of 19 Solve for x. 38 148 x

Question 7 of 19 Solve for x. 86 104 x

Question 8 of 19 Find the mAB. C D 7x + 10 3x + 30

Question 9 of 19 BE and CF are diameters. Find the mFE. 12  R 63 D 41 F E

Question 10 of 19 Solve for x. 4x + 2 98

Question 11 of 19 A hamster ran 42 times around its hamster wheel Question 11 of 19 A hamster ran 42 times around its hamster wheel. The radius of the wheel is 3 inches. What’s the total distance ran by the hamster? Round to the nearest tenth.

Question 12 of 19 Solve for x. y  x 82

Question 13 of 19 Solve for x. C 164 A 93 S x 22 T

Question 14 of 19 Solve for x. A 168 x B

Question 15 of 19 Solve for x. x 122

Question 16 of 19 120 x 130

Question 17 of 19 Find the area of the sector Question 17 of 19 Find the area of the sector. Round to the nearest tenth. 120 4.5 

Question 18 of 19 The circumference of a circle is 24 inches Question 18 of 19 The circumference of a circle is 24 inches. What is the exact area of the circle?

Question 19 of 19 What is the arc length of the shaded region to the nearest tenth? 232 7 

Review WS Know your formulas! Homework Review WS Know your formulas!