Formula for Area and Perimeter

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

Find the AREA of this figure.

• 160 square feet

• 160 feet

• 160

• 1600 feet

Mrs. Davis wanted to cover the classroom with new carpet. If the length of the classroom 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 = ___ x ____

• w x l

• l + l + w + w

• l x w

• l + w + l + w

What is the missing length if the perimeter is 30cm?

• 12cm

• 13cm

• 30cm

• 5cm

Marsha plans to make a square picture with an area of 36 square inches. Which could be the expression she used for 36 square inches?

• 8 × 6

• 7 × 6

• 6 × 6

• 5 × 6

What is the area of this shape

• 10 square units

• 12 square units

• 15 square units

What is the perimeter of this shape?

• 10 inches

• 20 inches

• 30 inches

Ester wants to put a fence around her desk. She measures the desk and finds that it is 2 feet wide and four feet long.

• 4 ft

• 8 ft

• 12 ft

If I wanted to place a fence around my backyard to keep my dog from running away, I would be looking at?

• Perimeter

• Area