Practice withPerimeter & Area

Gianni’s PizzaGianni & Jen were asked to design two rectangular pizzas, each with an area of 36 in2, but each with a different perimeter.

Use square tiles to complete this task.

Gianni’s Pizza

What is the area for each pizza?

What is the perimeter for each pizza?

Rectangles, Rectangles, Rectangles

Use 20 square tiles to create a rectangle.

Rectangles, Rectangles, Rectangles

Use 20 square tiles to create a rectangle.

How many different rectangles can you make?

Same Perimeter, Same Area

Draw a shape with a perimeter of 12 centimeters.

P = 12A = 8

Racing Rectangles

Draw a shape with a perimeter of the dice.

Rectangles Tiles

Create rectangle with tiles.15

PerimeterHow can you find the perimeter of each of these shapes?

PerimeterAdd all sides!

Can you write a FORMULA for perimeter of any:

Triangle?

Quadrilateral?

Pentagon?

AreaHow can you find the area of each of these shapes?

Area FormulasSquare

Rectangle

Parallelogram

Triangle

Trapezoid

Area of a square

3”

3”

1 2 3

4 5 6

7 8 9

3 units

3 units

9 square units in square3” or 3 units on each side3 x 3 = 9

Area of a square

Suppose square was 4 cm on each side. What is the area?

Suppose square was 6 feet on each side. What is the area?

Area of a square

Formula is side times side (S x S) OrSide squared (S2)

Area of a Rectangle3”

4”

1 2 3

3 units

4 units

12 square units in the rectangle3” or 3 units on top (width)4” or 4 units on side (height)3 x 4 = 12

4 5 6

7 8 910 11 12

Area of a Rectangle

Suppose a rectangle had a width (top) 5 cm and height (side) of 3 cm. What is the area?

Suppose a rectangle had a width of 6 feet and a length of 2 feet. What is the area?

Suppose a rectangle had a length of 8” and a width of 8”. What is the area?

Area of a Rectangle

Formula is TOP times SIDE OrLength times Height Or L x H Or L x W

Area of a Parallelogram

What is the relationship between a

rectangle

and a

parallelogram?

Area of a Parallelogram