We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byMia McCormack
Modified over 3 years ago
6 th Grade SPI: Calculate with circumferences and areas of circles.
The circumference of a circle is The distance around a circle Hint: Circumference remember circle around
First we must define some things about a circle. The radius is the distance from the center of a circle to any point on a circle. Hint: I like to define it as halfway through!
The diameter is the distance across a circle through the center.
We use Pi as the measurement to help us find the circumference of a circle. Pi, not Pie!
HINT: Pi =3.14
Two formulas are used in finding the circumference of a circle. Circumference = d 3.14 x 4in. 12.6in. WHEN THE CIRCLE HAS A DIAMETER MEASUREMENT, USE THE FOLLOWING FORMULA. 4in.
Circumference = 2 r When the radius of a circle is given, the following formula should be used. 2 x 3.14 x 5cm 31.4cm HINT: Always round your answers to the nearest tenth.
NOW…Lets have some fun. Tell me what formula would be used to solve the next five problems.
3in C = 2 x 3.14 x r
8ft C = 3.14 d
122mm C = 2 x 3.14 x d
17.5 cm C = 3.14 x d
122.5mm C = 2 x 3.14 x r
Now that we have determined the correct formula for each, lets work the problems.
3in C = 2 x 3.14 x r The answer is: 18.8in
8ft C = 3.14 d The answer is: 25.1ft
122mm C = 2 x 3.14 x d The answer is: 766.2mm
17.5 cm C = 3.14 x d The answer is: 55cm
122.5mm C = 2 x 3.14 x r The answer is: 76,930mm
5 th Grade Miss Camerons Class. The circumference of a circle is The distance around a circle Hint: Circumference remember circle around. Circumference.
Areas of Parallelograms and Trapezoids. A parallelogram has two sets of parallel lines.
Circles. Parts of a Circle Center The diameter is the distance across the circle through the center The radius is the distance to the center point.
Find the distance between the points below (9, 0) and (5,2) Find the length of the hypotenuse if the length of the legs are 4 and 2.
Area and Circumference of Circles. Diameter Circumference (C) - distance around a circle (similar to perimeter) If you measure the circumference and divide.
Warm-Up Multiply. 1.89 x 97 x 76 x 34 4.38 x 28.
Chapter 4 L4-5 Notes: Perimeter. Vocabulary The distance around any closed figure is called its perimeter. P for “Plus” all Sides.
Do Now:. Circumference What is circumference? Circumference is the distance around a circle.
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.
Math Circumference of Circles & Area of Circles. Vocabulary A circle is the set of all points in a plane that are the same distance from a given point,
investigate the relationship between the diameter and circumference of a circle.
SPI I CAN identify parts of a circle. I CAN find the circumference and area of a circle.
Objectives: SWBAT find the circumference of circles SWBAT solve problems involving circumference of circles.
6.7 Circumference & Area Notes. Circumference The distance around a circle. Do you remember the formula??? C = 2 r or C = d * Always use the button.
Circumference and area of circles Pick up your calculator for today’s notes.
Objective: Solve equations using area circumference, diameter, and radius.
Warm-Up Find the area: Circumference and Area Circles.
Circumference & Area of Circles Unit 5-3. Circumference Formula for Circumference: ** r is the radius ** ** 2r = d. d is the diameter. ** **Circumference.
Geometry :. In this lesson, you will learn how to find:
The Circle. The language of circles Circumference: The distance round the circle Circumference: The distance round the circle Diameter: the distance from.
EQ: How do you find the circumference of a circle? Lesson 4-6 Circumference pp Vocabulary to watch out for this lesson: Circle Center Diameter.
Lesson 7-2 Circumference and Area of Circles. Definitions Circle - A set of points in a plane that are the same distance away from a given point in the.
Circles Review 3 rd Grade Geometry. What is the diameter of a circle?
Chapter 10 Lesson 1: Circles and Circumference Objective: Learn to find the circumference of circles.
Aim: How do we find the circumference and area of a circle? 7G1 7G1 Calculate the radius or diameter, given the circumference or area of a circle. Do Now:
Circumference Lesson #33. What is Circumference? The distance around the outside of a circle is called the circumference (essentially, it is the perimeter.
Mrs. Planavsky 4 th Grade. Find the circumference of a circle Find the measurement of a diameter of the circle.
CIRCLES AND CIRCUMFERENCE. CONTINUATION OF PI DAY In every circle, the ratio of the circumference to the diameter is equal to …… The Greek letter.
Pleased to Meet You Five people meet in a room. Each one shakes hands with the other four. How many handshakes are there? (Hint: Draw a picture)
1. 2 Circle A circle is the set of all points that are the same distance from a given point called the center.
Warm Up 4. Label the circle with the following parts: radius, diameter, circumference.
CIRCUMFERENCE OF A CIRCLE LEARNING TARGET 4: I CAN SOLVE PROBLEMS USING AREA AND CIRCUMFERENCE OF A CIRCLE.
M5G2 – Students will understand the relationship of the circumference of a circle, its diameter, and pi (pi ≈ 3.14)
Finding Circumference for 4 th and 5 th Grade By Andrea Klee.
By: Kay McInnis. Diameter DIAMETER is the distance across a circle passing through the center point.
Area and Circumference of a Circle 2 Definitions A circle is the set of all points in a plane that are the same distance from a fixed point called the.
Main Idea/Vocabulary circle center radius chord diameter Find the circumference and area of circles. circumference pi.
Defining Success Easy As Pie? In this lesson we will: M.7.G.4 – Discuss the formulas for the area and circumference of a circle and use them to solve.
Circles: Area and Circumference. Definitions Circumference: Distance around the outside of a circle Area: How many squares it takes to cover a circle.
Splash Screen Example 9-2b Objective Find the circumference of circles.
Diameter, Circumference, and Rotational Sensors Robotics Academy All Rights Reserved.
Geometry – Circles. Circles are shapes made up of all points in a plane that are the same distance from a point called the center. Look at this example.
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.
By Renikki Alexander IDT 7062 Let’s Listen to the Circle Song "πr 2 sounds like area to me and when I need circumference I'll use πd."
How to Find the Area of a Circle by : Rachel Sorenson.
(7.9) Measurement. The student solves application problems involving estimation and measurement. The student is expected to: (A) estimate measurements.
Definition: A circle is the set of all points on a plane that is a fixed distance from the center.
Circumference of a Circle Math 10-3 Ch.3 Measurement.
Holt McDougal Geometry 1-5 Using Formulas in Geometry Apply formulas for perimeter, area, and circumference. Objective.
© 2017 SlidePlayer.com Inc. All rights reserved.