YOU NEED YOUR CARNEGIE NOTEBOOK TODAY GET AUTOMATICITY READY TURN IN ANY HOMEWORK TO THE DRAWER

I can solve problems using Area and Circumference of a Circle. Learning Target 4 I can solve problems using Area and Circumference of a Circle.

KEY TERMS Circle = collection of points all the same distance from one point called the center of a circle. Radius= line segment made by connecting the center of the circle to a point on the circle Diameter= line segment formed by connecting two points on a circle where the line goes through the center of circle. Diameter= 2 * Radius

Carnegie 12.1 # 1-3

Are the Circles congruent? B D C

If the both circles have the SAME RADIUS or the SAME DIAMETER then they are CONGRUENT.

Circumference of a circle It is the distance around the edge of the circle or the outside of a circle. It is like taking the perimeter of a circle. Circumference = π * Diameter Π (Pi) = the number you get when you divide the circumference of a circle by its diameter, apprx. 3.14.

The radius of a circle is 8.2 cm. Carnegie 12.2 # 8 The radius of a circle is 8.2 cm. Calculate the circumference of the circle using the circumference formula. Let π = 3.14 Circumference = π * Diameter Circumference = π * 2* Radius

Carnegie 12.2 # 15 The circumference of a circle is 112.8 mm. Calculate the diameter of the circle using the circumference formula. Let π = 3.14 Circumference= π * Diameter

EXIT SLIP DRAW THIS CIRCLE Line 1 DRAW THIS CIRCLE Which line is the radius and which is the diameter? What is the formula for finding the Circumference of a Circle? B D A C Line 2 E