Area is the amount of surface space that a flat object has. Area is reported in the amount of square units.

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Presentation transcript:

Area is the amount of surface space that a flat object has. Area is reported in the amount of square units.

When you measure the amount of carpet to cover the floor of a room, you measure it in square units. Would the area of your bedroom or the area of your house be greater? You’re right! The area of your house is greater than the area of your bedroom.

Count the number of green squares to determine the area of that surface. The area is equal to 9 squares.

Perimeter is the distance around the outside edge of a flat object. Perimeter is reported as a total number of linear units.

When you measure the amount of wallpaper border to go around a room, you measure it in lengths. Would the perimeter of your bedroom or the perimeter of your house be greater? You’re right! The perimeter of your house is greater than the perimeter of your bedroom.

Count the number of sides to determine the perimeter of this flat object. The perimeter is equal to 12.

Area = 15 square feet What is the area of this surface if each square is equal to one foot? Count the number of squares

Perimeter = 24 feet What is the perimeter of this surface if each square is equal to one foot? Count the number of sides.

Two neighbors build swimming pools. This is what the pools look like. Which family has the pool with the bigger swimming area? Family A Family B

The area of Family A’s pool is 8 square units. The area of Family B’s pool is 7 square units. Therefore, Family A has the pool with the bigger swimming area. Family A Family B

Now look at those same two pools. Which family has more side panels of the pool to clean? Family A Family B

The perimeter of Family A’s pool is 12 units long. The perimeter of Family B’s pool is 14 units long. Therefore, Family B has more side panels of the pool to clean. Family A Family B

Rectangle: 6cm 2cm Area =

Rectangle: l w Area =

Triangle: Area = h b

Triangle: Area = h b

Triangle: Area = 3½m 8m

Parallelogram

Trapezium

Compound shapes