Warm UP! Circle O has a radius of 20 feet. What is the length of arc KL? K 65o O L 20 ft.

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Warm UP! Circle O has a radius of 20 feet. What is the length of arc KL? K 65o O L 20 ft

Area of 6.8 Circles & Sectors

The amount of space inside a circle. Area of a Circle The amount of space inside a circle. r A= πr2

Find the area. 53 cm 7.6 yd 181.5 square yards 2206.2 square cm A= πr2

Find the area of the shaded region. Example 2 Find the area of the shaded region. A = π22 A = π 82 A = π 4 A = π 64 2 in A = 12.57 in2 A = 201.06 in2 6 in A shaded = A – A= 201.06 - 12.57 = 188.49in2

Sector the region bounded by two radii of the circle and their intercepted arc.

Area of a Sector WHY?

How Do You Find the Area of a Circular Sector?

Find the area of the sector. Example 3 Find the area of the sector. R 6 cm 60 Q A = 18.85 cm2

Find the area of the sector. Example 4 Find the area of the sector. 6 cm 120 7 cm Q R A  51.31 cm2