Objective: Find the circumference and area of circles.

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Presentation transcript:

Objective: Find the circumference and area of circles

Circle – Label The parts Radius Diameter

C=2 r Circumference: C=2 r Circumference is the length of the distance AROUND the circle Take 2 times the radius and pi

Circumference: C=2r Find the circumference of a circle with radius 5. Find the circumference of a circle with diameter in. 10 in.

Circumference Find the circumference of a circle with radius 2. Find the circumference of a circle with diameter 8.

Area of a Circle AreaArea of a circle is the amount of space the circle covers.

Area of a Circle Find the area of a circle with radius 9. 9 feet

Find the area of the circles below. 1)2) 6 in. 16 m

Area of a Circle Find the area of a circle with radius 5.

Area of a Circle Find the area of a circle with diameter 24.

Instructional Conversation Problem #1 What is the formula for circumference?

Instructional Conversation Problem #2 Find the circumference. 4

Instructional Conversation Problem #3 What is the formula for area of a circle?

Instructional Conversation Problem #4 Find the area. 20