Area and Perimeter Review

Area and Perimeter Review

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What's the difference?

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Multiple Choice

How much paint for the walls?

• perimeter

• area

Multiple Choice

A walk around the lake...

• Perimeter

• Area

Multiple Choice

The frame around a picture...

• Perimeter

• Area

Multiple Choice

How much carpet to buy for your room?

• Perimeter

• Area

Finding Perimeter

To find the perimeter, you ADD all the SIDES.

Multiple Choice

Find the perimeter of the figure.

• 23 cm

• 20 cm

• 18 cm

• 14 cm

Multiple Choice

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

If there are variables, you just combine the like terms.

Multiple Choice

What is the perimeter of the rectangle?

Write an expression to represent the perimeter.

• 12x + 6

• 5x+x+3

• 5x + x+3 + 5x

• (5x)(x+3)

Multiple Choice

Write an algebraic expression to represent the perimeter of the rectangle.

• 2w - 3x + 9 + 6w - 2x - 10

• 16w - 10x -2

• 2w - 3x + 9

• 6w - 2x - 10

To find the AREA, you will need a formula for the specific shape.

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The most common area you will need to find is for a rectangle.

This formula will be  $Area\ =\ length\ \cdot\ width$  or  $A=l\cdot w$  

Multiple Choice

Find the AREA of this figure.

• 160 square feet

• 160 feet

• abcdefghijklmnopqr

  stuvwxyz

• 1600 feet

Multiple Choice

• 5 feet

• 42 feet

• Stinky feet

• 12 Feet

Multiple Choice

Area of triangle?

• 17 units²

• 20 units²

• 10 units²

• 16 units²

Multiple Choice

What is the area of a square with a length of 4 cm?

• 1 square cm

• 16 square cm

• 2 square cm

• 8 square cm