In this video we explain how to find the area of a square or rectangle; what area means and how to calculate it. Practice questions and answers are provided at the end of the video.

In this video, we calculate the surface area of a sphere and hemisphere [with examples].

In this video, we calculate the surface area of a cylinder [with example].

SAT ACT Prep How to find the area of a parallelogram using special right triangles

In this video, we practice calculating how volume and surface area would change as we change the linear dimensions of 3d figures.

In this video, I teach how to find the width of a rectangular garden using its area and length. I provide a step-by-step guide on how to solve for the unknown variable and emphasize the importance of drawing a labeled picture. This is a...

In this math video we will be finding the surface area of a rectangular prism. We will begin by understanding that surface area is the sum of the areas of all the faces of the shape. We will identify the six faces of the given net of a...

This video explains how to find the area of a triangle when we are given the lengths of the base and vertical height. We also explain how the formula works. Practice questions and answers are at the end of the video.

The area of a triangle is always calculated using the formula 1/2 × base × height, regardless of whether it is a right, scalene, isosceles, or equilateral triangle. Perimeter and area have practical applications, such as determining the...

In this math video we will learn how to find the area of a trapezoid using triangles and a rectangle. We will use a four part constructed response math test question to model how to find the area of a trapezoid by decomposing it into a...

New ReviewIn today’s lesson, we’re learning how to find the Surface Area Of Cylinders — including the total surface area and lateral surface area. We’ll break down the formulas step-by-step, plug in real values, and work through several examples...

In this shorts math video we will find the side of a square using area. We are given the area of a square and asked to find the side length of the square. We will review and use the formula A=s^2, (A equals s squared.) We will rewrite...

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...

Welcome to our comprehensive series of Advanced High School Mathematics Tutorials! This series is perfect for students, teachers, and anyone looking to deepen their understanding of higher-level mathematics. Each video breaks down...

Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...

What do Euclid, 12-year-old Einstein, and American President James Garfield have in common? They all came up with elegant proofs for the famous Pythagorean theorem, one of the most fundamental rules of geometry and the basis for...

In this video, we calculate the volume of a sphere and hemisphere [with examples].

In this video, we calculate the volume of a cone [with example].

In this video, we calculate the volume of a cylinder [with example].

👉Learn how to factor quadratics. A quadratic is an algebraic expression having two as the highest power of its variable(s). To factor an algebraic expression means to break it up into expressions that can be multiplied together to...

In this quick math short, we start with the formula for the area of an isosceles right triangle and show how to rearrange it to solve for s, the side length. Then, we identify which of four answer choices gives an equivalent...

In this shorts video we will find the radius of a cylinder using volume. We will answer a standardized math test question where we are given the volume and the height of a cylinder and asked to find the radius. We will review that the...

In this shorts video we will answer a standardized math test question by finding the volume of a pyramid. We will review the volume formula for a pyramid and learn how to use it. We will understand that B represents the area of the...

This video provides some typical GCSE exam style practice questions on the topic of nets of 3D shapes. We also explain how the marks are awarded for each question.