CBSE Class 10 Mathematics
Question 1 of 35
Areas Related to Circles — Question Ex 12.1 Q3
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Question The given figure depicts an archery target marked with its five scoring regions from the center outwards as Gold, Red, Blue, Black, and White.
The diameter of the region representing Gold score is 21 cm and each of the other bands is 10.5 cm wide. Find the area of each of the five scoring regions.
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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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