Exploring Area and Perimeter of Shapes

This video tutorial covers the concepts of area and perimeter, explaining how to calculate each using models and formulas. It provides examples of finding the perimeter by adding the lengths of all sides of a shape and calculating the area by multiplying length and width. The tutorial also demonstrates how to use the perimeter to find the area of a rectangle, emphasizing the difference between the two concepts.

What is the perimeter of a shape?

• The area inside the shape

• The distance around the shape

• The number of sides of the shape

• The length of one side of the shape

How do you calculate the perimeter of a rectangle?

• Multiply the length by the width

• Add all the sides together

• Divide the length by the width

• Subtract the width from the length

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CCSS.4.MD.A.3

If a shape's perimeter is 18 cm, and two sides are 7 cm each, what is the length of one of the other sides?

• 9 cm

• 5 cm

• 4 cm

• 2 cm

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CCSS.3.MD.D.8

If the length of a rectangle is twice its width, what is the formula to calculate its perimeter?

• 2(Length + Width)

• 2(Length) + 2(Width)

• Length + Width

• Length x Width

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CCSS.4.MD.A.3

What is the formula for the area of a rectangle?

• Length x Width

• (Length + Width) x 2

• Length + Width

• Length / Width

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What does the area of a shape represent?

• The length of the shape

• The distance around the shape

• The number of corners

• The space inside the shape

Why is area important in real-life scenarios?

• To measure distances

• To measure the weight of objects

• To calculate the space inside a region for activities like carpeting

• To determine the height of structures

If a rectangle has a perimeter of 24 cm and one side is 5 cm, what is the length of the other side?

• 14 cm

• 5 cm

• 12 cm

• 7 cm

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CCSS.4.MD.A.3

How can the perimeter help in finding the area of a rectangle?

• By using the perimeter to find missing side lengths

• By dividing the perimeter by the number of sides

• It cannot help

• By providing the length of all sides

What is the area of a rectangle with a length of 7 cm and width of 5 cm?

• 25 cm²

• 14 cm²

• 35 cm²

• 12 cm²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3