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Take your Class 10th Maths preparation to the next level with NCERT solutions and MCQ-based questions from Chapter 11: Areas Related to Circles. Solve exercise questions, short-answer problems and detailed explanations to master concepts like areas of sectors, segments and combinations of plane figures. These resources align with the CBSE syllabus, ensuring thorough exam preparation. Regular practice will sharpen your problem-solving skills and boost your confidence for board exams. Access step-by-step solutions and revision notes tailored to simplify learning and help students excel. Focus on mastering the formulas and their real-life applications to strengthen your foundation. Begin practicing today to achieve excellent results and secure higher scores in exams. Start now!
Given:
– Circumference decreased by 10% ⇒ New radius = 0.9r.
New area:
A’ = π(0.9r)² = 0.81πr² = 0.81A.
Decrease in area:
A – A’ = A – 0.81A = 0.19A.
Percentage decrease:
(0.19A / A) × 100 = 19%.
This question related to Chapter 11 Mathematics Class 10th NCERT. From the Chapter 11 Area related to Circle. Give answer according to your understanding.
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