Module 4: Lessons 8/9

What equation can be used to find the area of this rectangle?

• 4 x 4 = 16 sq. cm.

• 3 x 4 = 12 sq. cm.

• 3 + 4 = 7 sq. cm.

• 3 x 3 = 9 sq. cm.

The width of the rectangle is 4 units and the length of the rectangle is...

• 9 units

• 7 units

• 8 units

• 4 units

The area of our rectangle is...

• 11 sq units

• 28 sq units

• 21 sq units

The missing side length is...

• 5 feet

• 6 feet

• 8 feet

• 7 feet

The area of this rectangle is...

• 36 sq. in.

• 45 sq. cm.

• 42 sq. in.

• 26 sq. cm.

Answer explanation

length x width = area

9 x 4 = area

area = 36 sq. in.

If the area of this rectangle is 30 sq. m., what is the other side length?

• 6 m.

• 35 m

• 5 sq. m.

• 7 sq. m.

Answer explanation

Area = length x width

30 = 5 x ?

so ? = 6