Area and Perimeter

Front

What is area?

Back

Area is the amount of space inside a shape, measured in square units.

Front

What is perimeter?

Back

Perimeter is the distance around a shape, measured in linear units.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Tags

CCSS.4.MD.A.3

Front

What is a square unit?

Back

A square unit is a unit of measure for area, representing a square that is 1 unit on each side.

Tags

CCSS.3.MD.C.5A

Front

If a rectangle has a length of 5 cm and a width of 3 cm, what is its area?

Back

Area = 5 cm × 3 cm = 15 square cm.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If a rectangle has a length of 5 cm and a width of 3 cm, what is its perimeter?

Back

Perimeter = 2 × (5 cm + 3 cm) = 16 cm.

Tags

CCSS.4.MD.A.3

Front

What does it mean if two shapes have the same perimeter?

Back

It means the distance around both shapes is equal, but their areas can be different.

Front

What does it mean if two shapes have the same area?

Back

It means the amount of space inside both shapes is equal, but their perimeters can be different.

Front

Which shape has a greater area: a rectangle with dimensions 4 cm by 6 cm or 3 cm by 8 cm?

Back

The rectangle with dimensions 3 cm by 8 cm has a greater area (24 sq cm vs 24 sq cm).

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3