Let’s solve each rectangle one by one. Remember:
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Area = length × width
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Perimeter = 2 × (length + width)
We’ll calculate both for each problem.
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1) Rectangle: 6cm by 2cm
Area = 6 × 2 =
12 square cm
Perimeter = 2 × (6 + 2) = 2 × 8 =
16 cm
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2) Rectangle: 5mm by 3mm
Area = 5 × 3 =
15 square mm
Perimeter = 2 × (5 + 3) = 2 × 8 =
16 mm
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3) Rectangle: 5m by 9m
Area = 5 × 9 =
45 square m
Perimeter = 2 × (5 + 9) = 2 × 14 =
28 m
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4) Rectangle: 8ft by 3ft
Area = 8 × 3 =
24 square ft
Perimeter = 2 × (8 + 3) = 2 × 11 =
22 ft
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5) Square: 6cm by 6cm *(a square is a special rectangle)*
Area = 6 × 6 =
36 square cm
Perimeter = 2 × (6 + 6) = 2 × 12 =
24 cm
*(Or since it’s a square, you can also do 4 × side = 4 × 6 = 24 cm — same answer!)*
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6) Rectangle: 8km by 5km
Area = 8 × 5 =
40 square km
Perimeter = 2 × (8 + 5) = 2 × 13 =
26 km
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Final Answer:
1) Area = 12 square cm, Perimeter = 16 cm
2) Area = 15 square mm, Perimeter = 16 mm
3) Area = 45 square m, Perimeter = 28 m
4) Area = 24 square ft, Perimeter = 22 ft
5) Area = 36 square cm, Perimeter = 24 cm
6) Area = 40 square km, Perimeter = 26 km
Parent Tip: Review the logic above to help your child master the concept of area worksheet 5th grade.
