Area of a Rectangle and a Triangle

6.1 Area Practice
(Rectangles, Triangles, and composite Shapes)

Math 7

​Area = Length x Width


Units are squared
(EX: cm², m², in², etc.)

Area of a Rectangle

Multiple Choice

How do you find the area of a rectangle?

• Length + Length + Length + Length
• Length + Width
• Length x Width
• Width x Width

Multiple Choice

In what units is area measured?

• centimeters
• cubic units
• units squared

• inches

Multiple Choice

What is the area of this rectangle?

• 20 square millimeters
• 28 square millimeters
• 21 square millimeters
• 22 square millimeters

Multiple Choice

Find the AREA of this figure.

• 160 square feet
• 160 feet
• 1600 square feet

• 1600 feet

Multiple Choice

What is the area of the rectangle?

• 15 cm²

• 15 cm
• 2 cm²

• 8 cm

Multiple Choice

Jim has a lawn that's area is 12cm². What is an equation he could have used to got there?

• 3cm + 4cm

• 6cm + 2cm

• 6 cm x 6 cm

• 3cm x 4cm

Multiple Choice

The area of a rectangle is 72 sq units.  One side length is 9 units.  What is the other side length?

• 9 units
• 7 units
• 10 units
• 8 units

Area of a triangle is HALF the area of a rectangle.










Base and Height are always perpendicular.

Multiple Choice

To find the area of a triangle, you need to know the _________ and ________.

• sides and sides

• base and height

• bottom and top

• length and width

Multiple Choice

The height has to be ______ to the base.

• parallel

• criss crossed

• perpendicular

• curved

Multiple Choice

Which number is the height?

• 3

• 3.1

• 1.5

Multiple Choice

Which number is the base?

• 3

• 3.1

• 1.5

Calculating Area of a Triangle

1. Identify the base and height

2. Substitute into the formula

3. Evaluate

4. Write your answer with Units²

Multiple Select

What is the formula to find the area of a triangle? (choose all that apply)

• A = bh

• $$A\ =\ \frac{b\times h}{2}$$  

• $$A\ =\frac{1}{2}bh$$  

• $$\ A\ =\ h\left(b\ +\ b\right)\div2$$  

Multiple Choice

What is the area?

• 12 cm²
• 14
• 14 cm²
• 24 cm²

Multiple Choice

Find the area of the figure:

• 30 ft²
• 60 ft²
• 16 ft²
• 36 ft²

Multiple Choice

What is the area of the triangle?

• $$70\ m^2$$

• $$140\ m^2$$

• $$60\ m^2$$

• 70 m