Definitions
The inside
Look at the picture Ms. Lunder draws and solve for perimeter!
Look at the shape Ms. Lunder is displaying. What is the area?
Explain the difference between Area and Perimeter
Perimeter is the outside of the shape and Area is the inside.
What is the perimeter of an object?
When you measure the outside of a shape.
A rectangle is 3 feet wide and 5 feet long. What is the perimeter?
16 feet squared
If a rectangle has a length of 6 and a width of 5. What is the area of that rectangle?
30
When do we use unit squared?
When we get the answer to the area problem!
What is a formula to find the area?
A = Length x Width
20 inches!
What are two different ways for finding the area of a shape?
1) A = L x W
2) Count the square units or boxes!
How many sides does a hexagon have?
5
What is the formula for finding the perimeter?
P = Adding the sides of the shape!
Sulwe looked at a square with 10 inch sides. She said the perimeter was 100 inches. Was she correct?
NO! It is 40 inches.
If a rectangle has a length of 10 inches and a width of 8 inches, what is the area?
80 inches squared
If Fancy's doggy school cost $1,000 and Walter gave her $756, how much more does Fancy need to get to pay her bill?
$244
Which way is width and length on a rectangle?
width is going up and down and length is going across
If a shape has 8 sides, what would be the formula to finding the perimeter?
P = s + s + s + s + s + s + s + s
YES!
A = L x W
A = 4 x 4
P = 16
P = s + s + s + s
P = 4 + 4 + 4 + 4
P = 16
Fancy had 32 dog treat bags for her friends at school. In each bag was 5 treats. How many treats did Fancy have to pack up?
160 treats