Using Algebra to find Perimeter

Which expression could be used to find the perimeter of this triangle?

• 3x

• 3x + 10

• 3(x + 4) + 6

• 2x + 10

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CCSS.6.EE.A.2

CCSS.6.EE.A.3

CCSS.6.EE.A.4

CCSS.6.EE.B.6

What is the value of a if the perimeter of the triangle is 28?

• a = 3

• a = 10

• a = 6

• a = 12.7

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CCSS.7.EE.A.1

CCSS.7.EE.A.2

CCSS.7.EE.B.3

CCSS.7.EE.B.4

CCSS.7.G.B.6

Which expression could be used to find the perimeter of this rectangle?

• 4n + 4

• 2n + 2

• n(n + 2)

• 2n(2n + 4)

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CCSS.7.EE.A.1

CCSS.7.EE.A.2

CCSS.7.EE.B.4

What is the value of y if the perimeter is 44?

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CCSS.7.EE.A.2

CCSS.7.EE.B.3

CCSS.7.EE.B.4

Which expression could be used to find the perimeter of the polygon?

• 4w - 8

• 2w + 10

• 6w + 3

• 6w + 2

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CCSS.7.EE.A.1

CCSS.7.EE.A.2

CCSS.7.EE.B.3

What is the value of x?

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CCSS.7.EE.A.1

CCSS.7.EE.A.2

CCSS.7.EE.B.3

CCSS.7.EE.B.4

What is the perimeter of the figure?

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CCSS.7.EE.A.2

CCSS.7.EE.B.3

CCSS.7.EE.B.4

What is the value of c if the perimeter is 20?

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CCSS.7.EE.B.3

CCSS.7.EE.B.4

What is the value of d if the perimeter is 21?

• d = 10

• d = 6

• d = 4

• d = 2

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CCSS.7.EE.B.3

CCSS.7.EE.B.4

What is the value of s if the perimeter is 49?

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CCSS.7.EE.A.1

CCSS.7.EE.A.2

CCSS.7.EE.B.3

CCSS.7.EE.B.4