CBSE Class 10 Mathematics
Question 4 of 35
Areas Related to Circles — Question Ex 12.1 Q4
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Question The wheels of a car are of diameter 80 cm each. How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour?
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Mathematics | Areas Related to CirclesWeb Content
CBSE Class 10 Areas Related to Circles — Complete Guide
This chapter carries 4-5 marks and involves calculation of sector areas, segment areas, and combination of plane figures.
Quick Revision: Key Formulae
- Sector area: (θ/360) × πr²
- Arc length: (θ/360) × 2πr
- Segment area: Sector area − Triangle area
- Combination figures: Decompose into basic shapes, add/subtract
Most Important Questions
- Find area of sector and corresponding segment
- Shaded region problems (circle in square, etc.)
- Flower petal and design problems
- Combined figure area calculations
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