Chapter Overview (English + हिंदी)
Mensuration is formula-driven. Learn key areas/perimeters of square, rectangle, triangle, circle.
क्षेत्रमिति formula-based है। Square/Rectangle/Triangle/Circle के area-perimeter याद रखो।
Professor Tip: पहले formula याद, फिर 5 सवाल speed से, फिर 1-2 सवाल deep समझ से.
Important Formulas / महत्वपूर्ण सूत्र
Rectangle: Area = l×b; Perimeter = 2(l+b)
Square: Area = a²; Perimeter = 4a
Triangle: Area = 1/2 × b × h
Circle: Area = πr²; Circumference = 2πr
Cube: Volume = a³
Quick Tricks / त्वरित ट्रिक्स
- π ≈ 22/7 (exam).
- Circle circumference = 2πr.
- Triangle area = 1/2 bh.
Practice MCQs (6) – Answer Hidden by Default
Click “Show Answer” for each question. (SSC GD level)