What is the difference between area and perimeter?
Area is the amount of space inside a shape. Perimeter is the distance around the outside of a shape. We measure area and perimeter in units like square inches, feet, yards, etc.
Area & Perimeter
Area - is the amount of space inside a two-dimensional shape. It is measured in square units (such as cm2). Perimeter - is the length of the outer edge of a two-dimensional shape. It is measured in linear units (such as cm). Lateral Area - is the area of the sides of a three-dimensional shape. It is measured in square units (such as cm2).
The area of a rectangle is the product of its length and width. If a rectangle’s sides are doubled, its area is quadrupled. The area of a circle is known as the circle’s “zone of influence”, or the space inside the circle’s perimeter. The circumference of a circle is the same as its perimeter, but the area is always different.
Did you know?
What shapes have the same area and perimeter?
What are some everyday examples of area and perimeter?
How can we use area and perimeter to solve real-world problems?
How has learning about area and perimeter helped you solve math problems?
Brain break: Draw a house floating on a cloud with a tree growing upside down out of its chimney.
Question: What is the area and perimeter of a rectangle with a width of 8 and a length of 6? Clues: • Area is the amount of space inside the rectangle. To find the area, multiply the length and width. • Perimeter is the distance around the rectangle. To find the perimeter, add the width and length and double the sum. • Remember to include the units of measurement with your answer. In pairs: Select and solve one of the tasks: A. Draw a picture to show the rectangle with a width of 8 and a length of 6. B. Explain to your partner how you would find the area and perimeter of your rectangle.
What is the formula for finding the area of a rectangle?
- Length x Width
- Length + Width
- 2 x (Length + Width)
- 2 x Length x Width
What is the formula for finding the perimeter of a rectangle?
- 2 x (Length + Width)
- (Length x Width) / 2
- (Length/Width) ^ 2
- (Length - Width) / 2
What is the formula for finding the area of a square?
- Side Length x Side Length
- Side Length + Side Length
- (Side Length^3)/3
- (Side Length-1)^3
What is the formula for finding the perimeter of a square?
- 4 x Side length
- (Side length/4)*5
- (Side length^4)/4
- (Side length-1)^4
If a rectangular garden measures 6 meters by 8 meters, what is its area?
- 48 sq. m.
- 14 sq. m.
- 28 sq. m.
- 36 sq. m.
Work together in pairs: What is the formula for finding the area of a rectangle?