Exploring Area and Perimeter of Composite Shapes

This video tutorial explains how to find the area and perimeter of composite shapes, which are formed by joining two or more shapes. It begins with a review of calculating the area and perimeter of rectangles, followed by examples of composite shapes. The video demonstrates different methods to calculate the area and perimeter, emphasizing the importance of identifying missing dimensions and choosing the most efficient approach. The tutorial concludes with a brief mention of involving triangles in future lessons.

What formula is used to calculate the area of a rectangle?

• Length / Width

• 2(Length + Width)

• Length x Width

• Length + Width

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

How do you calculate the perimeter of a rectangle?

• Length x Width

• Length + Width

• 2(Length + Width)

• Length / Width

Tags

CCSS.4.MD.A.3

What unit of measurement is used for the area of a shape?

• Kilograms

• Square units

• Linear units

• Cubic units

Tags

CCSS.3.MD.C.6

In a composite shape made of two rectangles, how do you find the total area?

• Multiply the areas of both rectangles

• Subtract the smaller rectangle's area from the larger one

• Add the areas of both rectangles

• Add the length of both rectangles

Tags

CCSS.3.MD.C.7D

What is the first step in calculating the area of a composite shape?

• Add the lengths of all the shapes

• Find the perimeter of each shape

• Divide the composite shape into simpler shapes

• Calculate the area of each individual shape

How do you find the perimeter of a composite shape?

• Multiply the lengths of all the outer edges

• Subtract the inner lengths from the total length

• Add the perimeters of all individual shapes

• Add the lengths of all the outer edges

What mistake do students often make when calculating the area of a composite shape?

• Using the total length instead of individual lengths

• Adding instead of multiplying the dimensions

• Miscalculating the dimensions of one of the shapes

• Forgetting to add the areas together

Tags

CCSS.6.G.A.1

When faced with a complex composite shape, what is a recommended strategy?

• Guessing the area based on experience

• Calculating the perimeter first

• Breaking it down into simpler shapes

• Ignoring the smaller shapes

Tags

CCSS.3.MD.C.7D

What is the correct way to calculate the area of a composite shape that includes a space to be subtracted?

• Subtract the area of the space first

• Add the area of the space to the total

• Calculate the total area then subtract the space

• Ignore the space in the calculation

Tags

CCSS.3.MD.C.7D

How can the perimeter of a complex composite shape be accurately calculated?

• By subtracting the inner edge lengths from the total length

• By adding the perimeters of all individual shapes

• By calculating the area first

• By adding all the outer edge lengths