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Regular Shapes Perimeter Practice

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Regular Shapes Perimeter Practice worksheet preview

Regular Shapes Perimeter Practice

Regular shapes illustration

📐 Part 1: Shape Recognition & Perimeter Rules

Remember: Perimeter is the distance around the outside of a shape.

• Square: All 4 sides are equal → Perimeter = side × 4

• Rectangle: Opposite sides are equal → Perimeter = (length + width) × 2

1. Which formula would you use to find the perimeter of a square with sides of 6cm?

6 × 4

6 × 2

6 + 6

2. A rectangle has a length of 8m and width of 5m. What is its perimeter?

26m

40m

13m

3. Which shapes have a perimeter that can be calculated? (Tick all that apply)

Square

Rectangle

Circle

Triangle

4. Below are some shapes. Find the perimeter of each shape. Fill in the missing side lengths where necessary.

Shape 1: Square with one side labeled 5cm. What is the perimeter?

Shape 2: Rectangle with length 7cm and one side missing. The other side is labeled 3cm. What is the perimeter?

Shape 3: Triangle with sides labeled 4cm, 5cm, and one side missing. What is the perimeter?

✏️ Part 2: Calculate Perimeters

5. Find the perimeter of a square with sides of 9cm. Show your working.

Answer: _________ cm

6. A rectangular playground is 15m long and 12m wide. What is the perimeter?

Answer: _________ metres

7. Sarah's square garden has a perimeter of 32m. How long is each side?

Answer: _________ metres

8. A rectangle has a perimeter of 24cm. If the width is 4cm, what is the length?

Answer: _________ cm

🎨 Part 3: Problem Solving

9. Draw and label a rectangle that has a perimeter of 20cm. Show two different rectangles that both have this perimeter.
10. Explain in your own words: Why do two different rectangles have the same perimeter but different shapes?
11. Challenge: A square and a rectangle both have a perimeter of 28cm. The rectangle is 9cm long. Which shape uses space more efficiently? Explain your thinking.

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