Perimeter

The formula used to calculate the perimeter of a square is

• side x 4

• side + 4

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CCSS.4.MD.A.3

John bought a smart phone last week. The smart phone is rectangular with its length of 14 cm and width of 7 cm. What is its perimeter?

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CCSS.4.MD.A.3

What is the perimeter?

• 20
• 5
• 4

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CCSS.4.MD.A.3

What is the perimeter of this rectangle?

• 21 cm

• 42 cm

• 12 cm

• 9 cm

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CCSS.4.MD.A.3

What is the perimeter of this shape?

• 21

• 20

• 22

• 31

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CCSS.4.MD.A.3

What is the perimeter of this square?

• 3 units

• 9 units

• 10 units

• 12 units

What is the perimeter of this rectangle?

• 8 in.

• 20 in.

• 40 in.

• 12 in.

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CCSS.4.MD.A.3

What is the perimeter of the rectangle?

• 28 sq feet
• 28 feet
• 48 feet
• 48 sq feet

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CCSS.4.MD.A.3

How to find the perimeter of a square?

• ℓ × w

• ℓ + w

• ℓ × 4

• ℓ × ℓ

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CCSS.4.MD.A.3

What is the perimeter of this rectangle?

• 60 in

• 34 cm

• 60 cm

• 24 cm

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CCSS.4.MD.A.3