Areas related to circles · वृत्तों से संबंधित क्षेत्रफल

Arcs, sectors and the clock's minute hand — a slice of a circle is a fraction of the whole.

Areas related to circles games

Minor and major: the major sector = circle − minor sector. A segment = sector − the triangle made by the two radii and the chord.

Clock hands: the minute hand turns 6° a minute, so in 15 minutes it sweeps a 90° sector. Also see parts of a circle and surface areas and volumes.

Goes with NCERT Mathematics Class 10, Chapter Areas Related to Circles. Answers worked out exactly with π = 22/7.

A one-page chart to stick on the wall, and a worksheet to practise.

Minor and major: the major sector = circle − minor sector. A segment = sector − the triangle made by the two radii and the chord.

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Name: ____________________ Class: ______ Date: __________

1. Length of the arc of a sector, r = 21 cm, θ = 60° = ________

2. Area of a sector, r = 14 cm, θ = 45° = ________

3. Area of the major sector of the same circle = ________

4. The minute hand is 14 cm long. Area swept in 15 minutes = ________

5. Perimeter of a quadrant of radius 7 cm = ________

6. Shade a minor segment in a circle and write how to find its area:

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