Understanding Area and Perimeter of a Rectangle

The video tutorial explains how to calculate the area and perimeter of a rectangle. It begins by describing the properties of a rectangle, emphasizing that it has two sets of congruent sides. The tutorial then demonstrates how to calculate the area using the formula 'length times width' and provides an example with specific measurements. Finally, it explains how to find the perimeter by adding the lengths of all four sides, again using a numerical example.

What is a key characteristic of a rectangle?

• It has no right angles.

• All sides are of different lengths.

• It has two sets of equal sides.

• It has three sides.

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

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

• Length plus width

• Length times width

• Length divided by width

• Length minus width

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If a rectangle has a length of 12 cm and a width of 7 cm, what is its area?

• 19 square centimeters

• 84 square centimeters

• 42 square centimeters

• 126 square centimeters

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CCSS.4.MD.A.3

How do you calculate the perimeter of a rectangle?

• Divide the length by the width

• Add all the sides together

• Subtract the width from the length

• Multiply the length by the width

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CCSS.4.MD.A.3

What is the perimeter of a rectangle with sides measuring 12 cm and 7 cm?

• 19 centimeters

• 38 centimeters

• 84 centimeters

• 24 centimeters

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CCSS.4.MD.A.3