Let’s solve each rectangle area problem step by step.
Remember:
Area of a rectangle = length × width
We’ll multiply the two given sides for each rectangle. Don’t forget to include the correct unit squared (like cm², mm², etc.).
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Problem 1:
Sides: 9 cm and 7 cm
Area = 9 × 7 =
63 cm²
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Problem 2:
Sides: 4 mm and 8 mm
Area = 4 × 8 =
32 mm²
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Problem 3:
Sides: 6 km and 3 km
Area = 6 × 3 =
18 km²
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Problem 4:
Sides: 15 in and 5 in
Area = 15 × 5 =
75 in²
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Problem 5:
Sides: 7 ft and 11 ft
Area = 7 × 11 =
77 ft²
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Problem 6:
Sides: 5 yd and 9 yd
Area = 5 × 9 =
45 yd²
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Problem 7:
Sides: 12 km and 6 km
Area = 12 × 6 =
72 km²
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Problem 8:
Sides: 5 m and 6 m
Area = 5 × 6 =
30 m²
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All calculations are simple multiplications — just make sure you’re multiplying the right numbers and writing the units correctly with a little “²” at the end!
Final Answer:
1. 63 cm²
2. 32 mm²
3. 18 km²
4. 75 in²
5. 77 ft²
6. 45 yd²
7. 72 km²
8. 30 m²
Parent Tip: Review the logic above to help your child master the concept of area worksheet for 3rd grade.