Exploring Perimeter Calculation for Shapes

This video tutorial introduces the concept of perimeter, explaining it as the distance around the edge of a shape. Using examples like a rug and a house, the video demonstrates how to calculate the perimeter of rectangles by adding the lengths of all sides. It also applies the concept to real-life scenarios, such as determining the amount of fencing needed for a yard. Additionally, the video uses a grid to illustrate perimeter calculation, emphasizing that perimeter concerns only the outer edge of a shape. The tutorial concludes with a recap of the key points discussed.

What is the perimeter of a rectangle with lengths of 5 ft and widths of 3 ft?

• 15 ft

• 16 ft

• 8 ft

• 14 ft

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CCSS.4.MD.A.3

What does the perimeter of a shape represent?

• The length of one side

• The number of corners

• The area inside the shape

• The distance around the edge

Why do we count the edge twice when calculating the perimeter of a rectangle?

• Because it makes the shape larger

• Because it has four sides

• Because it increases the perimeter

• Because opposite sides are equal

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CCSS.HSG.CO.C.11

If a house needs 40 ft of fencing on one side, how much would it need on the opposite side?

• 40 ft

• 30 ft

• 50 ft

• 60 ft

To fence a rectangular yard that is 70 ft by 40 ft, how much fencing is needed in total?

• 220 ft

• 210 ft

• 200 ft

• 230 ft

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CCSS.4.MD.A.3

What is the purpose of calculating the perimeter of a yard?

• To find out how many trees can be planted

• To determine the area of the yard

• To calculate the volume of the yard

• To know the length of fencing needed

How many inches is the perimeter of the purple shape on the grid?

• 22 inches

• 20 inches

• 16 inches

• 18 inches

Does the perimeter calculation involve the inside area of the shape?

• Only for squares

• Yes

• Only for circles

• No

If each block on the grid represents 1 inch, how many blocks long is the perimeter of the shape?

• 16 blocks

• 18 blocks

• 20 blocks

• 22 blocks

If a shape's perimeter is 18 inches, what can be said about its size?

• It has an edge length of 18 inches

• It is 18 inches tall

• It covers an area of 18 square inches

• It has 18 corners