Area of Rectangles

What operation do you use when finding area?

• Addition

• Subtraction

• Multiplication

• Division

Ian is building a rectangular sandbox. The perimeter will be 12 feet. He wants the sandbox to have the greatest possible area. What could be Ian's sandbox?

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Isaac drew two rectangles on grid paper.

Which statement about the perimeter and areas of Isaac's rectangles is true?

• The areas are the same and the perimeters are the same

• The areas are different and the perimeters are different

• The areas are different and the perimeters are the same

• The areas are the same and the perimeters are different

When measuring area, what label do you use?

• units

• units²

• units³

Mrs. Corbin wanted to cover her living room with new carpet. If the length of the room was 12 feet and the width was 8 feet. How much carpet would she need to buy?

• 20 feet

• 40 ft

• 96 square feet

• 40 square feet

A rectangle has an area of 45 square inches and a width of 3 inches. What is the length of the rectangle?

• 135 square inches

• 66 inches

• 15 inches

• 9 inches

• 6 units

• 10 units

• 150 units

• 15 units

Farmer Bob needs to build a fence for his chickens. The area he wants to build a fence around is 40 feet long and 20 feet wide. How many feet of fence does he need to buy?

• 800 feet

• 120 feet

• 60 feet

• 80 feet

Find the width of the rectangle.

• 2.5 ft

• 25 ft

• 2.5 ft²

• 250 ft²

True or False:

Area is the length times the width of a rectangle.

• True

• False