Students start learning mathematics as early as elementary school, and as they progress, the subject becomes more and more complicated. Among others, the syllabus devotes a part to geometry and requires students to master different shapes and know how to calculate their area and volume. Are you also studying these days how to calculate the volume of a rectangular prism?

Let's see an example: In this case, we are given a rectangular prism with the following characteristics:

Length $=6$

Width $=8$

Height = $=4$

Therefore, the volume of the rectangular prism is: $192=4\times8\times6$

It is important to remember that in the exam the name of the form may vary from one exercise to another.

For example:

The question that may appear on the exam may be.

Calculate the volume of:

Rectangular prism

Orthohedron

Cube

The shapes mentioned above, in some problems can be found with less formal names, since we may be asked to calculate the volume of boxes, containers or containers.

It is important to remember that the rectangular prism is a geometric shape with $6$ faces, $12$Edges and 8 Vertices.

And therefore the calculation of its volume is the same.

If you are curious and interested in the subject, you can learn how to calculate the volume of a prism in the following article: The volume of a right triangular prism.

Practical exercises for calculating the volume of an orthoctahedron

Exercise 1

Since the surface area of the rectangular prism is equal to $94cm^2$

The length of the prism is equal to$5 cm$.

The width of the prism is equal to$4 cm$.

Task:

What is the volume of the prism?

Solution:

The formula to calculate the surface area of the prism:

Surface area= 2*{(length a * width b) + (height c * length b) + (height c * width a)}.

Solution:

Surface area $= 94cm^2$

Length $= 5cm$

Width $= 4cm$

Height = ?(Unknown $X$)

$94=2\times((5\times 4)+(5\times X)+(4\times X))$

$\frac{94}{2}=(20)+(5X)+(4X)$

$47=20+9X$

$9X=27$

$X=3$

The height is equal to $3cm$

The formula for rectangular prism $=Altura\times Ancho\times Largo=3\times4\times5=60cm³$

Answer:

Answer is $60cm³$

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Is it useful to memorize the formula for calculating the volume of an orthohedron?

There are cases in which the teachers give the students a sheet with all the formulas, but in other cases the students have to memorize them. Therefore, our recommendation is that you memorize all the formulas little by little. That feeling of stress that invades many when taking an exam can be reduced if you know the formulas by heart. Why?

Because you have data that you know and can use.

Because you do not depend on any formula sheet or the professor's willingness to refresh your memory or not.

Because remembering the formula gives you confidence.

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It is true that a bad grade in mathematics is nothing to be happy about. However, it is important to remember that bad grades are for learning. After your test has been returned to you, invest some time to review the test. It is vital to note that sometimes it will not be easy to do this alone and so it may be helpful to do this with a math tutor. The purpose of this review is to understand what hindered your path to a good grade so that you can focus on it and do better in the future. So where did you fail this time?

You lacked concentration or went blank due to nerves or stress. Solution: do breathing exercises and meditation before taking the exam.

The exercises were too complicated. This is one of the most common reasons for failing the exam. Solution: practice exercises of different levels before the exam. Many times, we practice only easy level exercises to feel more confident and it is a complete mistake.

You have been deducted points for calculation errors. Small miscalculations can affect your mood. Solution: check your answers several times before you give the test to the teacher.

You didn't have time to answer all the exercises. Learning to manage your time during an exam is paramount. When you know how to manage it properly, you will have the power in your hands. Solution: study for the exam with a stopwatch to improve your times.

A grade does not represent you, it is only a small part of you. Mathematics is a subject in which you can improve with perseverance and prove it in future exams. Never forget this: the advantage of getting a bad grade (everything is relative, of course) is that you can always improve.

Preparing for the exam with friends: does it really pay off?

There is a direct correlation between the study before an exam and the grade you get. Many times, when we try to understand why we didn't get the results we expected, we realize that the problem was in the preparation and study beforehand. Usually, these are students who are good friends and who decided to study together in a group. Sometimes these study groups can go well, but sometimes they don't allow you to concentrate for long periods of time or they become more like social gatherings than study groups. Here are some questions that can help you decide if studying in a group with friends is effective for you or not:

Did you manage to understand the gaps you had with the help of your friends?

Did you have to continue studying at home after studying with your friends?

How many exercises did you manage to solve while studying in a group?

Did you feel you were prepared for the exam?

A good hint: what grade did the friends you studied with get?

Don't get left behind: pick up your pace with a private teacher

Since we are talking about formulas, you should know the following: the fewer gaps you have in mathematics, the easier it will be for you to get a good grade in mathematics. It is common knowledge that in the more advanced groups (especially in junior high and high school) there are many more tests and quizzes.

Sometimes, a private lesson can help you make a lot of progress and engrave the formulas in your head and make you master them. The orthoctahedron is one more shape that you will have to work on in exams in a myriad of ways. The best way to memorize the formula is to practice non-stop problems related to the orthohedron, with special attention to those that require you to calculate its volume.