Lesson 2.8: Mensuration (2D & 3D)
Description:
Questions on areas, volumes, and perimeters are asked in exams.
Key Topics:
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Area: Square = a², Circle = πr².
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Volume: Cube = a³, Cylinder = πr²h.
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Surface Area: Cube = 6a², Sphere = 4πr².
Example:
Find area of a circle with radius 7 cm.
Solution: πr² = 22/7 × 7 × 7 = 154 cm².
