Review of KD 3.8 - Area & Volume

The formula of finding the area of rectangle is ...

• length + width + length + width

• 4 x side

• length x width

• length x width x height

Look at this figure.

The area of this figure is …

• 10 unit squares

• 18 unit squares

• 20 unit squares

• 24 unit squares

Find the area of this mirror.

• 108 cm

• 135 cm

• 162 cm

• 175 cm

If the length of a rectangle is 7 dm and the width is 5 dm, the area of the rectangle is …

• 35 dm

• 24 dm

• 40 dm

• 50 dm

Grizelle has a puzzle. The shape of the puzzle is a square.

The side of the puzzle is 12 cm. What is the area of the puzzle?

• 24 cm

• 84 cm

• 120 cm

• 144 cm

The width and the length of the classroom is 10 m x 8 m. What is the area of the classroom?

• 80 m

• 65 cm

• 54 cm

• 36 cm

The area of this shape is ...

• 60 cm

• 225 cm

• 255 cm

• 260 cm

Arrange from the smallest to the greatest area.

• A - C - B

• B - C - A

• B - A - C

• C - B - A

A window with all equal sides has an area of 81 dm². What is its side?

• 9 dm

• 12 dm

• 18 dm

• 21 dm

A movie screen is 4 m wide with a total area of 24 m². What is its length?

• 20 m

• 12 m

• 6 m

• 2 m