Areas and perimeters

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, calculated by adding the lengths of all its sides.

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 square with a side length of 4 cm?

Back

Area = 4 cm × 4 cm = 16 sq. cm.

Front

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

Back

Perimeter = 4 × 4 cm = 16 cm.

Front

How do you calculate the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the area of a triangle with a base of 6 cm and a height of 4 cm?

Back

Area = 1/2 × 6 cm × 4 cm = 12 sq. cm.

Front

What is the relationship between the area of a triangle and a rectangle?

Back

The area of a triangle is half of the area of a rectangle with the same base and height.

Front

If a rectangle has an area of 24 sq. cm and a width of 4 cm, what is its length?

Back

Length = Area ÷ Width = 24 sq. cm ÷ 4 cm = 6 cm.