Area
What is the formula for Area ?
A = length x width
What is the formula for perimeter?
= length + length + width + 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 length of wood will Tom need to frame his poster?
16 feet
True or False?
If two shapes have the same area, then that means they must also have the same perimeter.
FALSE
Length: 14 meters Width: 7 meters Area: ?
98 square meters
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 is the perimeter of the following shape
65
Length: 41 meters Width: 23 meters Area: ?
943 square meters
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
What is the definition of perimeter?
The total distance AROUND a figure.
What are all the possible dimensions for a rectangle or square with an area of 36 square centimeters?
1 x 36 2 x 18 3 x 12 4 x 9 6 x 6
Pam has a 3 foot by 8 foot garden. Carol is building a garden with the same area but with different dimensions.
What are ALL of the other possible dimensions for Carol's garden?
1x24
2/12
4x6
Build It !
A Width of 8
A perimeter of 24
8x4
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?
How much space is taken up INSIDE a shape.
What is the missing side length ?
12
What is the total area for this IRREGULAR POLYGON ?
180 km squared
What is the Perimeter of the Irregular polygon ?
38 yd
DAILY DOUBLE **** Wager as many points as you want
The perimeter of Joe's kitchen is 40 ft.
The length of the kitchen is 8 ft .
Tile is on sale for $12.00 a square foot.
What would it cost to tile Joe's entire kitchen floor?
8 x 2 = 16
40 - 16 = 24
24 / 2 = 12
A = LxW
A= 8 x 12 = 96
96 x 12 = 1,152
Explain in just 4 steps how you would find the area of this irregular polygon
Cut the irregular polygon into two regular polygons
Find the area of shape 1
Find the area of shape 2
Add the both Areas together
Measure it !
Measure the Index Card . Label it's length and width.
Then Find the AREA and PERIMETER ! You have 2 minutes only.
GO!!!!
A = 6 x 4
A = 24
P = L + L + W + W
P = 6 + 6 + 4+ 4 = 20