Example 1 · level 1
Find the area (in m²) of a rectangular plot 14 m long and 12 m wide.
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- Area = 14 × 12 = 168 m².
Answer: 168
CLASS 6 MATHS · MENSURATION
Perimeter and area of rectangles and squares
Rectangle: perimeter = 2(l + b), area = l × b. Square: perimeter = 4a, area = a × a.
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Worked examples
Example 2 · level 2
Find the perimeter (in m) of a square plot of side 52 m.
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- Perimeter = 4 × 52 = 208 m.
Answer: 208
Example 3 · level 3
A rectangular plot 28 m long and 10 m wide in Ranchi is to be fenced. Fencing costs ₹95 per metre. What is the total cost?
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- Perimeter = 2 × (28 + 10) = 76 m.
- Cost = 76 × ₹95 = ₹7,220.
Answer: ₹7,220