Perimeter and Area — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A rectangle with sides 7 cm and 3 cm has a perimeter of 20 cm.
Perimeter = 7 + 3 + 7 + 3 = 20 cm.
2. A rectangle that is 6 m long and 4 m wide has an area of 24 square m.
Area = 6 × 4 = 24 square cm.
3. A square with 9 cm sides has a perimeter of 36 cm.
Perimeter = 4 × 9 = 36 cm.
4. A garden is 8 feet long and 5 feet wide. Its area is 40 square feet.
Area = 8 × 5 = 40 square cm.
5. A rectangle with sides 10 m and 2 m has a perimeter of 24 m.
Perimeter = 10 + 2 + 10 + 2 = 24 cm.
6. A square tile is 3 inches on each side. Its area is 9 square inches.
Area = 3 × 3 = 9 square cm.
7. A rug is 5 feet by 8 feet. Its perimeter is 26 feet.
Perimeter = 5 + 8 + 5 + 8 = 26 cm.
8. A square window is 7 cm on each side. Its area is 49 square cm.
Area = 7 × 7 = 49 square cm.
9. A square garden has sides of 6 m. Its perimeter is 24 m.
Perimeter = 4 × 6 = 24 cm.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Rectangle 4 cm × 3 cm area
→ 12 square cm
16 cm
Square 5 cm perimeter
→ 20 cm
64 square cm
Rectangle 6 cm × 2 cm perimeter
→ 16 cm
12 square cm
Square 8 cm area
→ 64 square cm
20 cm
4 × 3 = 12 sq cm, 4 × 5 = 20 cm, 6 + 2 + 6 + 2 = 16 cm, 8 × 8 = 64 sq cm.