Let's solve each problem step by step.
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Perimeter Problems
1. Rectangle (9 ft × 5 ft)
- Perimeter of a rectangle = 2 × (length + width)
- = 2 × (9 + 5) = 2 × 14 =
28 ft
✔ Perimeter = 28 ft
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2. Triangle (7 cm, 7 cm, 8 cm)
- This is an isosceles triangle with sides: 7 cm, 7 cm, and 8 cm
- Perimeter = sum of all sides
- = 7 + 7 + 8 =
22 cm
✔ Perimeter = 22 cm
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3. Square (8 mm × 8 mm)
- All sides are equal in a square
- Perimeter = 4 × side
- = 4 × 8 =
32 mm
✔ Perimeter = 32 mm
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4. Parallelogram (8 in, 4 in, 8 in, 4 in)
- Opposite sides are equal in a parallelogram
- Sides: 8 in, 4 in, 8 in, 4 in
- Perimeter = 8 + 4 + 8 + 4 =
24 in
✔ Perimeter = 24 in
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Area Problems
5. Square (4 in × 4 in)
- Area of a square = side × side
- = 4 × 4 =
16 in²
✔ Area = 16 in²
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6. Rectangle (8 ft × 3 ft)
- Area of a rectangle = length × width
- = 8 × 3 =
24 ft²
✔ Area = 24 ft²
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7. Rectangle (3 mm × 5 mm)
- Area = length × width
- = 3 × 5 =
15 mm²
✔ Area = 15 mm²
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✔ Final Answers:
1.
Perimeter = 28 ft
2.
Perimeter = 22 cm
3.
Perimeter = 32 mm
4.
Perimeter = 24 in
5.
Area = 16 in²
6.
Area = 24 ft²
7.
Area = 15 mm²
Let me know if you'd like these written out on the worksheet format!
Parent Tip: Review the logic above to help your child master the concept of area and perimeter worksheet grade 7.
