Area and Perimeter Formulas

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is calculated using the formula: Area = length × width.

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter of a rectangle is calculated using the formula: Perimeter = 2 × (length + width).

Front

How do you find the diameter of a circle?

Back

Multiply the radius by 2.

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated using the formula: Area = π × radius².

Front

What is the formula for the circumference of a circle?

Back

The circumference of a circle is calculated using the formula: Circumference = 2 × π × radius.

Front

How do you find the radius of a circle?

Back

Divide the diameter by 2.

Front

What is the formula for the area of a square?

Back

The area of a square is calculated using the formula: Area = side × side.

Front

What is the formula for the perimeter of a square?

Back

The perimeter of a square is calculated using the formula: Perimeter = 4 × side.

Front

When labeling area measurements, what is the unit?

Back

The unit is always squared (e.g., in², cm², ft²).

Front

What is the relationship between the diameter and radius of a circle?

Back

The diameter is twice the radius.