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 total distance around a shape, measured in linear units.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

What is the area of a rectangle with length 5m and width 3m?

Back

Area = 5m × 3m = 15 square meters.

Front

What is the perimeter of a rectangle with length 5m and width 3m?

Back

Perimeter = 2 × (5m + 3m) = 16 meters.

Front

What is the formula for the area of a square?

Back

Area = side × side.

Front

What is the perimeter of a square with side length 4cm?

Back

Perimeter = 4 × 4cm = 16cm.

Front

If a rectangle has an area of 20 square units and a width of 4 units, what is the length?

Back

Length = Area ÷ Width = 20 ÷ 4 = 5 units.

Front

If a rectangle has a perimeter of 30 units and one side is 10 units, what is the other side?

Back

Perimeter = 2 × (length + width) => 30 = 2 × (10 + width) => width = 5 units.