Area/Perimeter of Rectangles, Parallelograms, Triangles

What is the perimeter of this rectangle?  
Length:  8 cm
Width:  4 cm

• 32 cm
• 24 square centimeters
• 24 cm
• 84 cm 

Tags

CCSS.4.MD.A.3

What is the area of this rectangle?  
Length:  9 cm
Width:  3 cm 

• 24 square cm
• 27 square cm
• 93 square cm
• 27 cm 

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do we solve for Perimeter?  

• length x width
• L x W
• Add all the sides
• add then multiply by 4

Tags

CCSS.3.MD.D.8

How do we solve for AREA of a rectangle?  

• multiply side times 6
• Length x width
• cannot solve, there are no numbers
• add all the sides together

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What did I do wrong when solving for perimeter?
Length:  7 cm
Width:  4 cm
7 x 4 = 28 squared cm

• your answer should be 28 cm
• you multiplied, you should add 7 + 7 + 4 + 4
• you solved for perimeter
• you should multiply 4 x 7 

Tags

CCSS.4.MD.A.3

If a rectangle is 9 cm by 2 cm, what is its perimeter?  What is its area?  

• Perimeter:  22 cm   Area:  18 squared cm
• Perimeter:  18 cm   Area:  22 squared cm
• Perimeter:  18 cm  Area:  18 squared cm
• Perimeter:  20 cm  Area:  22 squared cm

Tags

CCSS.4.MD.A.3

What is the perimeter?

• 24 sq cm
• 24 cm
• 35 sq cm
• 35 cm

Tags

CCSS.4.MD.A.3

What is the area of the rectangle?

• 15 sq cm
• 15 cm
• 16 sq cm
• 16 cm

Tags

CCSS.7.EE.B.3

Find the PERIMETER of this figure.

• 20 square feet
• 20 cm
• 25 square feet
• 20 cm sq.

Tags

CCSS.4.MD.A.3

What is the perimeter of this rectangle?

• 21 units
• 12 units
• 3 units
• None of the above.

Tags

CCSS.3.MD.D.8