📘 BANK EXAM SPEED MATHS – PAGE 16

🔹 Mensuration & Geometry Tricks

Mensuration and geometry questions appear regularly in bank exams. Memorizing formulas and using shortcut techniques can save significant time.

✅ Trick 1: Rectangle Shortcuts

• Area = Length × Breadth
• Perimeter = 2(L + B)

Example: L = 20, B = 10

• Area = 200
• Perimeter = 60

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✅ Trick 2: Square Shortcut

• Area = a²
• Perimeter = 4a

Example: a = 15

• Area = 225
• Perimeter = 60

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✅ Trick 3: Circle Shortcut

• Area = πr²
• Circumference = 2πr

Example: r = 7

• Area = 154
• Circumference = 44

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✅ Trick 4: Triangle Shortcut

• Area = (1/2) × base × height

Example: base = 10, height = 8

• Area = 40

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✅ Trick 5: Cylinder Shortcut

• Volume = πr²h

Example: r = 3, h = 7

• Volume = 198

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🔹 Tough Practice Questions

1. Find area of rectangle L=25, B=12
2. Perimeter of square with side 18
3. Area of circle with radius 14
4. Volume of cylinder r=7, h=10
5. Area of triangle base=12, height=9
6. Circumference of circle r=21

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🔹 Quick Answers

• 1. 300
• 2. 72
• 3. 616
• 4. 1540
• 5. 54
• 6. 132

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🔹 Exam Tips

✔ Memorize all basic formulas thoroughly
✔ Use π = 22/7 for faster calculations
✔ Avoid long multiplication steps
✔ Practice geometry-based questions regularly

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