Area
What is the formula for area?
Area = length x width
What is the formula for perimeter?
Perimeter = length + width + length + width
Tom has a poster with a length of 5 feet and a width of 3 feet. He wants to put a wooden frame around the poster. What perimeter of wood will Tom need to frame his poster?
16 feet
What type of math do you use for a perimeter problem?
Addition
Length: 15 feet
Width: ?
Perimeter: 56 feet
W = 13 feet
Length: 12 m
Width: 5 m
Area: ?
A = 60 m2
Length = 90 feet
Width = 60 feet
Perimeter = ?
P = 150 feet
Sally's pool table has an area of 36 square feet. The length of the pool table is 9 feet. What is the width of the pool table?
4 feet
What type of math do you use for an area problem?
Multiplication
Length: ?
Width: 17 feet
Perimeter: 78 feet
Length = 22 feet
Length: 14 m
Width: 8 m
Area: ?
A = 112 m2
Length = 250 feet
Width = 190 feet
Perimeter = ?
Ben is painting his room. He paints 3 walls. Each wall has dimensions of 13 x 8 feet. What is the total area that Ben has to paint?
312 square feet
What is the definition of perimeter?
Perimeter is the distance around the outside of a shape
Length: ?
Width: 10 m
Area: 100 m2
L = 10 m
Length: 16 m
Width: 13 m
Area: ?
A = 208 m2
Length = 560
Width = 390
Perimeter = ?
P = 950 feet
Mike is taking measurements of different rooms in his house. The bonus room has an area of 72 square feet. The length of the room is 8 feet. What is the perimeter of the room?
34 feet
What is the definition of area?
Area measures the space inside the rectangle
Length: 19 m
Width: ?
Area: 95 m 2
W = 5 m
Length: 41 m
Width: 23 m
Area = ?
A = 943 m2
Length = 770 feet
Width = 890 feet
Perimeter = ?
P = 1,660 feet
Hannah and Sally are planting gardens. Hannah's garden is 2 x 8 feet long. Sally's garden is 4 x 4 feet long. They want to put fencing around their gardens. Who will need more fencing?
Hannah (20 feet)
What is different about units of area compared to units of perimeter?
Units of area are "square units"
A rectangular carpet in the classroom covers 30 square metres.
The carpet is 5 metres long.
How wide is the carpet?
The carpet is 6 meters wide