Learn how to calculate the area of a shape. Discover the definition of area, learn the formulas and the units of basic shapes, and see examples of...

Learn how to find the area of a rectangle. This lesson explains the formula for determining the area of a rectangle and includes examples of its use.

The area and perimeter of a square can be calculated by simple formulas that only require the square's side to be known. These formulas and their explanations are given below.

Finding the area of the parallelograms can be done by determining the number of square units in the parallelogram. We can find the total number of square units by multiplying the base (b) by …

What is surface area? Learn the definition and formula for finding the surface area of shapes. Calculate the surface area of squares and prisms with examples.

What is the surface area of a pyramid? Learn the definitions of pyramid and surface area, and see how to find the surface area of a pyramid with examples.

Learn how to find the area of a trapezoid by using its formula with our engaging video lesson! See examples, then test your skill with a quiz for practice.

Learn how to calculate the area of a square or a rectangle. We will see two examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to inscribe a square in a circle, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

The surface area is the quantity that covers the entire sphere. The formula for the surface area of a sphere is V = 4 * pi* r squared, where r is the radius.