Area of a Circle Sector Worksheet
Calculate the area of circle sectors given radius and angle for Grade 7 math students.
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Area of a Circle Sector
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Read each question carefully and calculate the area of the circle sector. Round your answers to two decimal places where necessary. Use π ≈ 3.14.
1. A circle has a radius of 8 cm. Find the area of a sector with a central angle of 90°.
2. The formula for the area of a circle sector is A = (θ/360°) × π × r², where θ is the central angle in and r is the of the circle.
3. What is the area of a sector with a radius of 10 cm and a central angle of 180°?
78.5 cm²
157.0 cm²
314.0 cm²
50.0 cm²
4. A circular pizza has a radius of 20 cm. If a slice of pizza represents a sector with a central angle of 45°, what is the area of that slice?
5. If the central angle of a sector is doubled, the area of the sector also doubles.
True
False