Mensuration – Grade 9 ICSE

There are few topics covered in this section:

1. Area and Perimeter of a Triangle and Quadrilateral
2. Circle: Area and circumference
3. Surface area and volume of 3-D solid

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Area and Perimeter of a Triangle and Quadrilateral
Key topics include:
• Area and perimeter of triangle (including Heron’s formula)
• Square, rhombus, rectangle, parallelogram and trapezium
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Circle: Area and circumference
Key topics include:
• Simple direct problems involving inner and outer dimensions and cost
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Surface area and volume of 3-D solid
Key topics include:
• Different internal and external dimensions of the solid
• Concept of volume being equal to area of cross-section x height
• Open/closed cubes/cuboids/cylinders
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