Mathematics - Geometry - Circles - Area of circles - Pizza Area Estimation

Show a pizza with radius 10 inches on a 20×20 inch box. 'The box area is 400 sq inches. Is the pizza area: about 200, about 300, about 400?' (About 314). Students estimate: the circle fills most but not all of the square. It's about 3/4 of the square area. The actual formula will give exactly π×r².

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Mathematics - Geometry - Circles - Area of circles - Pizza Area Estimation
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Mathematics - Geometry - Circles - Area of circles - Pizza Area Estimation

vivmagarwal
vivmagarwalJan 29, 2026

Description

Show a pizza with radius 10 inches on a 20×20 inch box. 'The box area is 400 sq inches. Is the pizza area: about 200, about 300, about 400?' (About 314). Students estimate: the circle fills most but not all of the square. It's about 3/4 of the square area. The actual formula will give exactly π×r².

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MathematicsGeometry - CirclesStage 7, Class 7, Class 7, MYP Grade 7, Grade 7

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