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AREA OF CIRCLES. REVIEW-CIRCUMFERENCE WORDS: The circumference of a circle is equal to pi times its diameter or pi times twice its radius. Symbols: or.

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Presentation on theme: "AREA OF CIRCLES. REVIEW-CIRCUMFERENCE WORDS: The circumference of a circle is equal to pi times its diameter or pi times twice its radius. Symbols: or."— Presentation transcript:

1 AREA OF CIRCLES

2 REVIEW-CIRCUMFERENCE WORDS: The circumference of a circle is equal to pi times its diameter or pi times twice its radius. Symbols: or

3 Find the circumference. Use. 8cm

4 Find the circumference. Use. mm 6 x 7

5 AREA WORDS: The area of a circle equals the product of pi and the square of the radius. Symbols:

6 Find the area. Use. 6 cm

7 Find the area. Use. 8cm d = 8 r = 4

8 A circle has a radius of 11 feet. Find the area of the circle. Use.

9 The world’s largest cylindrical sundial is at Walt Disney World. The face of the sundial has a diameter of 122 feet. What is the area of the face? d = 122 ft r = 122÷2 r = 61 ft Use.

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