Practice: Perimeter & Area

Part A: Find the Perimeter

Directions: Find the perimeter of each rectangle. Remember: P = 2l + 2w OR add all four sides. Show your work!

1. Length = 8 cm, Width = 5 cm

Perimeter = cm

2. Length = 12 m, Width = 7 m

Perimeter = m

3. Length = 15 ft, Width = 9 ft

Perimeter = ft

4. Length = 20 in, Width = 11 in

Perimeter = in

Part B: Find the Area

Directions: Find the area of each rectangle. Remember: A = length x width. Use SQUARE units in your answer!

5. Length = 9 cm, Width = 6 cm

Area = sq cm

6. Length = 11 m, Width = 8 m

Area = sq m

7. Length = 14 ft, Width = 5 ft

Area = sq ft

8. Length = 25 in, Width = 4 in

Area = sq in

Part C: Find Both Perimeter AND Area

Directions: For each rectangle, find BOTH the perimeter and area. Pay attention to your units!

7 m 4 m

Perimeter = m Area = sq m

10.

12 ft 5 ft

Perimeter = ft Area = sq ft

11.

10 cm 6 cm

Perimeter = cm Area = sq cm

12.

15 in 9 in

Perimeter = in Area = sq in

Part D: Find the Missing Side Length

Directions: Use the given information to find the missing side length. Show your work!

13. A rectangle has a perimeter of 24 cm. The length is 8 cm. What is the width?

Width = cm

14. A rectangle has a perimeter of 36 m. The width is 7 m. What is the length?

Length = m

15. A rectangle has an area of 48 sq ft. The length is 8 ft. What is the width?

Width = ft

16. A rectangle has an area of 72 sq in. The width is 6 in. What is the length?

Length = in

Part E: Word Problems

Directions: Read each problem carefully. Decide if you need perimeter or area, then solve. Include units in your answer!

17. Mr. Garcia wants to put a fence around his rectangular garden. The garden is 18 feet long and 12 feet wide. How many feet of fencing does he need?

Hint: Fencing goes AROUND the garden. Is this perimeter or area?

Answer:

18. Lisa wants to cover her rectangular bulletin board with fabric. The board is 4 feet long and 3 feet wide. How much fabric does she need?

Hint: Fabric covers the INSIDE of the board. Is this perimeter or area?

Answer:

19. A rectangular pool has a perimeter of 50 meters. If the length is 15 meters, what is the width of the pool?

Answer:

20. Mrs. Chen is carpeting her rectangular living room. The room has an area of 180 square feet. If the room is 15 feet long, how wide is it?

Answer:

21. A soccer field is 100 meters long and 60 meters wide. What is the area of the field?

Answer:

22. Tyler is putting ribbon around a rectangular picture frame. The frame is 11 inches long and 8 inches wide. How much ribbon does he need?

Answer:

Challenge: Think About It!

23. Two rectangles have the SAME perimeter of 20 cm. Rectangle A is 6 cm by 4 cm. Rectangle B is 7 cm by 3 cm. Which rectangle has the greater area?

Rectangle A Area: sq cm Rectangle B Area: sq cm

Greater area: Rectangle

24. A square has the same perimeter as a rectangle that is 10 m by 6 m. What is the side length of the square?

Side length of square: m