Let’s solve each rectangle and square area problem step by step.
Remember:
Area of a rectangle or square = length × width
We’ll go one by one.
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1. Rectangle: 42 m × 11 m
→ 42 × 11 = ?
Break it down:
40 × 11 = 440
2 × 11 = 22
Total = 440 + 22 =
462 m²
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2. Square: 34 m × 34 m
→ 34 × 34
Use (30 + 4)² = 30² + 2×30×4 + 4² = 900 + 240 + 16 =
1,156 m²
Or just multiply:
34 × 34
= 34 × 30 + 34 × 4
= 1020 + 136 =
1,156 m²
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3. Rectangle: 76 ft × 9 ft
→ 76 × 9
70 × 9 = 630
6 × 9 = 54
Total = 630 + 54 =
684 ft²
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4. Rectangle: 85 ft × 41 ft
→ 85 × 41
Break into: 85 × 40 + 85 × 1
85 × 40 = 3,400
85 × 1 = 85
Total = 3,400 + 85 =
3,485 ft²
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5. Rectangle: 49 mm × 49 mm → This is a square!
→ 49 × 49
(50 - 1)² = 50² - 2×50×1 + 1² = 2500 - 100 + 1 =
2,401 mm²
Or:
49 × 50 = 2,450 → minus 49 = 2,450 - 49 =
2,401 mm²
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6. Rectangle: 53 mm × 22 mm
→ 53 × 22
Break into: 53 × 20 + 53 × 2
53 × 20 = 1,060
53 × 2 = 106
Total = 1,060 + 106 =
1,166 mm²
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7. Rectangle: 99 m × 10 m
→ 99 × 10 =
990 m²
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8. Rectangle: 85 in × 39 in
→ 85 × 39
Break into: 85 × 40 - 85 × 1
85 × 40 = 3,400
Minus 85 = 3,400 - 85 =
3,315 in²
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9. Rectangle: 83 m × 49 m
→ 83 × 49
Break into: 83 × 50 - 83 × 1
83 × 50 = 4,150
Minus 83 = 4,150 - 83 =
4,067 m²
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Now let’s list all answers clearly:
Final Answer:
462 m²
1,156 m²
684 ft²
3,485 ft²
2,401 mm²
1,166 mm²
990 m²
3,315 in²
4,067 m²
Parent Tip: Review the logic above to help your child master the concept of rectangle area worksheet.
