Pole powierzchni prostopadłościanu - Matematyka Szkoła Podstawowa i Gimnazjum

In this video, I show you how to calculate the surface area of ​​a cuboid and a cube. I teach you how to recognize pairs of identical faces and demonstrate how to use the formula based on the sum of the areas of opposite faces. I also demonstrate how to calculate the area of ​​rectangles for specific faces of a cuboid based on the length of the edges and how to sum the results using the formula: 2 times the area of ​​each of three different faces. In the rest of the video, I show you how to perform calculations using different units of length, converting them to a common unit, and I also discuss a shortened method for calculating the surface area of ​​a cube by multiplying the area of ​​one face by 6. Table of Contents: 1. What is the surface area of ​​a cuboid? 2. Three pairs of identical faces 3. The general formula for the surface area of ​​a cuboid 4. Calculating the surface area of ​​a cuboid using the example of a cuboid 5. Using the formula for summing areas 6. Example: a 5 cm × 4 cm × 10 cm cuboid 7. Example: a cuboid with mixed units 8. Converting length units before calculating area 9. How to calculate the surface area of ​​a cube 10. The shortened formula for the area of ​​a cube as 6 × a² You can find the end of this video here:    • Dokończenie filmu p.t. Pole powierzchni pr...   More in the playlist:    • POLE POWIERZCHNI   and:    • GEOMETRIA PRZESTRZENNA   You can get EASY ACCESS to all my math lessons using my website: www.matmagwiazdy.pl On this channel, you will find full lectures – 100% lessons – on Mathematics for Primary School, High School, and Technical School. Good luck :) Tomasz D. Gwiazda **CHAPTERS** [00:00] What is the surface area of ​​a cuboid? [00:34] Three pairs of identical faces [01:37] The general formula for the surface area of ​​a cuboid [03:21] Calculating the surface area of ​​a cuboid using the example of a cuboid [06:28] Using the formula for summing areas [07:34] Example: a 5 cm × 4 cm × 10 cm cuboid [09:46] Example: a cuboid with mixed units [10:07] Converting units of length before calculating the area [12:44] How to calculate the surface area of ​​a cube