Get out your STAAR Chart

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Presentation transcript:

Get out your STAAR Chart 01/24 Agenda EQ: Can I find the circumference of a circle? Homework: Skills HW 17 due 1/26 Calendar: Test – 02/06 I need: Pencil Pick up (1) Get out your STAAR Chart

Circumference of a Circle Circumference is the distance ____________________________ a circle. _______________________ is the distance across the circle. ______________________ is half the distance across the circle. ______, called _______, is approximately equal to ____________.

Circumference Formulas

Example #1 Find the circumference of the circle.

Example #2 Find the circumference of the circle.

Example #3

Example #4

Example #5 Amanda’s mother wants to trim her circular table cloth with beads. If the radius of the table is 9 ¾ feet, how much beading will she need to trim the tablecloth?

01/25 I need: Pencil Pick up (1) Homework: Calendar: Agenda EQ: Can I find the area of a circle? Homework: Skills HW 17 due 1/26 Calendar: Test – 02/06 I need: Pencil Pick up (1)

Area of a Circle Area is the amount of ________________ a circle covers or takes up. _______________________ is the distance across the circle. ______________________ is half the distance across the circle. ______, called _______, is approximately equal to ____________.

Area Formula Remember __________________ means the number times _____________.

Example #1 Find the area of the circle.

Example #2 Find the area of the circle.

Example #3

Example #4 The most popular pizza at Pavone’s Pizza is the 10-inch personal pizza with three toppings. What is the area of a pizza with a diameter of 10 inches?

Example #5 Mr. Rives’ rotating sprinkler waters his lawn up to a radius of 7 feet. What is the maximum number of square feet of lawn Mr. Rives can expect two sprinklers to cover?

01/26 I need: Pencil Pickup (1) Notebook Paper Turn in Skills HW 17 Agenda EQ: Can I find the circumference and area of a circle? Homework: Circle Maze – due 1/29 Calendar: Test – 02/06 I need: Pencil Pickup (1) Notebook Paper Turn in Skills HW 17

Circumference and Area Maze You may work with a partner You both must show all work including the formula (make your work look just like your notes) Homework if you don’t finish You should do a total of 13 problems

01/29 I need: Pencil Turn in Circle Maze Pickup (1) Homework: Agenda EQ: Can I find the circumference and area of a circle? Homework: Skills HW 18 – due 2/2 Calendar: Test – 02/06 I need: Pencil Turn in Circle Maze Pickup (1)

Working Backwards What is the circumference of a circle that has an area of 113.04 square inches? What is the area of a circle that has a circumference of 12.56 feet?

Task Cards-Work with partner – show all work Numbers 1-4 – You must do 3 Numbers 5-8 – You must do 3 Numbers 9-12 – You must do 2 and 1 of them has to be measuring Numbers 13-16 – You must do 2 Numbers 17-20 – You must do 2 and 1 of them has to be measuring Numbers 21-24 – You must do 2 Numbers 25-28 – You must do 3 Numbers 29-32 – You must do 2 Numbers 33-36 – You must do 2 Numbers 37-40 – You must do 3

Activity from yesterday 01/30 Agenda EQ: Can I find the circumference and area of a circle? Homework: Skills HW 18 – due 2/2 Calendar: Test – 02/06 I need: Pencil Activity from yesterday

Task Cards-Work with partner – show all work Numbers 1-4 – You must do 3 Numbers 5-8 – You must do 3 Numbers 9-12 – You must do 2 and 1 of them has to be measuring Numbers 13-16 – You must do 2 Numbers 17-20 – You must do 2 and 1 of them has to be measuring Numbers 21-24 – You must do 2 Numbers 25-28 – You must do 3 Numbers 29-32 – You must do 2 Numbers 33-36 – You must do 2 Numbers 37-40 – You must do 3