Formula for Area and Perimeter

A perimeter of a rectangle is 20 meters. The width is 4 meters. What would the length be?

• 6 meters

• 13 meters

• 15 meters

Match the following formulas for rectangles/rectangular prisms

• 2(l) + 2(w)

• Volume

• l x w x h

• Area

• l x w

• Perimeter

The side length of a square garden is 5 feet. Julio uses the formula ​ (a)   to find how much fencing he needs to go around the garden. He finds he needs ​ (b)   of fencing.

• p=4 x s

• 20 feet

• p=s x s

• p=2(l)+2(w)

• 25 feet

• 15 feet

The side length of a square garden is 5 feet. Julio uses the formula ​​ (a)   to find how big his garden is so he can buy some soil. He finds that his garden covers (b)   .

• a=s x s

• 25 square feet

• a= 4 x s

• p=2(l)+2(w)

• 25 feet

• 15 feet

What do the l and w stand for in this formula? A=l x w

• length and width

• long and wide

• large and wind

• laugh and wink

Solve for the area of the square: side length=6 inches

• 36 square inches

• 24 square inches

• 18 square inches

• 12 square inches

Solve for the perimeter of the rectangle: length=3 feet, width=7 feet

• 21 feet

• 20 feet

• 14 feet

• 12 feet

The distance around a shape is called ________.

What is the perimeter if all sides are 4 inches?

• 4 in.

• 16 in. 

• 8 in. 

What is the Area formula for this shape?

• r²

• 2l+2w

• bh

• π