CBSE Class 10 Mathematics
Question 28 of 35
Areas Related to Circles — Question Ex 12.3 Q10
Back to all questions Ex 12.3 Q10
Question The area of an equilateral triangle ABC is 17320.5 cm2. With each vertex of the triangle as centre, a circle is drawn with radius equal to half the length of the side of the triangle (see figure). Find the area of the shaded region.
(Use π = 3.14 and √ 3 = 1.73205).
BRIGHT TUTORIALS
BRIGHT TUTORIALS
CBSE Class X | Academic Year 2026-2027
9403781999
Excellence in Education
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
About Bright Tutorials
Bright Tutorials, Hariom Nagar, Nashik Road, provides expert coaching for CBSE and ICSE students. Our experienced faculty ensures comprehensive preparation for board exams with personalised attention and 3-tier differentiation for students of all levels. Contact us at 9403781999 or visit brighttutorials.in.