Perimeter and Area — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. A yard is 12 m long and 8 m wide. To build a fence around it, you need 40 m of fencing.
Perimeter = 12 + 8 + 12 + 8 = 40 cm.
2. A floor is 9 feet by 5 feet. You need 45 square foot tiles to cover it.
Area = 9 × 5 = 45 square cm.
3. A picture frame is square with 4-inch sides. The frame edge is 16 inches around.
Perimeter = 4 × 4 = 16 cm.
4. A poster is 7 cm tall and 3 cm wide. Its area is 21 square cm.
Area = 7 × 3 = 21 square cm.
5. A pool is 10 m long and 6 m wide. A walkway around the edge is 32 m long.
Perimeter = 10 + 6 + 10 + 6 = 32 cm.
6. A square sandbox has 5 ft sides. Its area is 25 square ft.
Area = 5 × 5 = 25 square cm.
7. A table is 11 inches long and 3 inches wide. Its perimeter is 28 inches.
Perimeter = 11 + 3 + 11 + 3 = 28 cm.
8. A blanket is 4 m wide and 6 m long. Its area is 24 square m.
Area = 4 × 6 = 24 square cm.
9. A bookmark is 9 cm long and 2 cm wide. Its perimeter is 22 cm.
Perimeter = 9 + 2 + 9 + 2 = 22 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.
Fence around 7 m × 3 m yard
→ 20 m
22 cm
Tiles for 6 m × 6 m floor
→ 36 square m
36 square m
Ribbon around 10 cm × 1 cm card
→ 22 cm
20 square m
Carpet for 5 m × 4 m room
→ 20 square m
20 m
7+3+7+3 = 20 m, 6×6 = 36 sq m, 10+1+10+1 = 22 cm, 5×4 = 20 sq m.