In mathematics, we calculate the volume and surface area of a sphere. We need to learn the formulas, and we can understand how to calculate the volume and surface area of a sphere by using the formulas. The formula that produces the volume and surface area of a sphere is a bit complicated. Also, to […]

# Archive List for Secondary Math（2 / 4Page）

## Volume and Surface Area of Pyramids and Cones: Formulas and Generatrix

In mathematical space figures, there is a problem to calculate the volume and surface area of a pyramid or cone. Unlike prisms and cylinders, how can we calculate the volume and surface area of a solid with a sharp pointed? Compared to prisms and cylinders, the calculation of pyramids and cones is more complicated. Especially […]

## Surface Area of Prisms and Cylinders: Calculations and Formulas

In mathematics, we learn about space figures. We learn the area and volume of a three-dimensional figure, not a plane. One such field is the surface area of prisms and cylinders. How can we calculate the surface area of prisms and cylinders? When calculating the surface area of a prism or cylinder, the method of […]

## The Arc Length and the Sector Area: the Math of Circles and Arcs

In mathematics, we may calculate the length of the arc and area of a sector. How do we calculate the arc length and the sector area? When calculating the arc length and the sector area, we must understand the properties of a circle. If we can calculate the length of the circumference and the area […]

## Basics of Math Probability: Coins and Dice with a Tree Diagram

In mathematics, we study probability. Probability is so familiar in our lives and all statistics are based on probability. It is because we study probability that we can understand what the news is about. Also, experimental data in science is processed using probabilities. Whether or not it will rain in a weather forecast is also […]

## Quadratic Functions Basics: How to Solve Problems and Graph

In mathematics, we learn about quadratic functions. It is a quadratic function with a graph of squares, and the graph has a curve. In mathematics involving graphs, we first learn direct proportionality. A graph that makes an application of proportional is a linear function. Further development of linear functions is quadratic functions. Linear and quadratic […]

## Quadratic Equations: Square Root, Factorization, and Quadratic Formula

An area that must be learned in mathematics is quadratic equations. Compared to linear equations, quadratic equations are more complex to calculate. In quadratic equations, there are multiple ways to answer the question. Square roots, factorization, and quadratic formulas are the most common ways to solve quadratic equations. When solving a quadratic equation, we must […]

## Square Root Addition and Subtraction: How to Calculate Fractions and Square Roots

An area of study in mathematics is square roots. The square root allows us to represent numbers before they are squared. Square root calculations include addition and subtraction. For multiplication and division, we can just multiply the numbers in the root symbol as they are. For addition and subtraction, on the other hand, the rule […]

## Rationalizing the Denominator: How to Eliminate the Square Root

Fractions are frequently used in square root calculations. In the calculation of fractions, the denominator may contain the root symbol. In that case, if the root sign is still in the denominator, the answer is wrong. When calculating the square root, if the denominator contains the radical symbol, it should be removed. This process is […]

## Multiply and Divide Square Root: How to Do Prime Factorization

In the square root, we learn multiplication and division. Typically, in mathematics, we learn addition and subtraction first. But for square roots, multiplication and division are easier. We can just multiply the numbers in the root symbol. However, there are rules for multiplication of square roots. And few people understand why it is okay to […]