Exploring Area and Perimeter of Rectilinear Shapes

What is the method to calculate the perimeter of a rectilinear shape?

• Subtract the smallest side from the largest

• Divide the shape into smaller shapes

• Add all the different sides together

• Multiply the length by the width

How many sides does the example rectilinear shape have?

• Six

• Eight

• Four

• Ten

What unit of measurement is used in the example?

• Centimeters

• Meters

• Feet

• Inches

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

• Multiply all sides

• Add the lengths of all sides

• Measure the longest side

• Divide the shape into simpler shapes

What are the dimensions of shape A?

• Length 6 cm, Width 4 cm

• Length 4 cm, Width 6 cm

• Length 5 cm, Width 3 cm

• Length 3 cm, Width 5 cm

What is the area of shape A?

• 24 cm squared

• 20 cm squared

• 30 cm squared

• 28 cm squared

What are the dimensions of shape B?

• Length 2 cm, Width 5 cm

• Length 4 cm, Width 3 cm

• Length 3 cm, Width 4 cm

• Length 5 cm, Width 2 cm

What is the area of shape B?

• 14 cm squared

• 10 cm squared

• 12 cm squared

• 15 cm squared

What is the total area of the rectilinear shape?

• 38 cm squared

• 40 cm squared

• 34 cm squared

• 36 cm squared

What should you do after calculating the area and perimeter of a rectilinear shape?

• Pause and check your work

• Compare it with another shape

• Divide it by 2

• Multiply it by the number of sides