Pole prostokąta i kwadratu - Matematyka Szkoła Podstawowa i Gimnazjum

In this video, I demonstrate how to calculate the area of ​​a rectangle and square using mathematical formulas, teach how to use letter symbols for sides as A and B, present units of area in square units, explain the rules for converting length units before calculating area, solve problems with a given area and an unknown side, analyze cases with mixed units, and demonstrate how to decompose an irregular figure into rectangles to calculate its total area. Table of Contents: 1. Formula for the Area of ​​a Rectangle A × B 2. Formula for the Area of ​​a Square A × A or A² 3. Units of Area 4. Calculating the Area of ​​a Rectangle Given Sides 5. Calculating the Area of ​​a Square Given Sides 6. Converting Units of Length Before Calculating Area 7. Calculating the Side of a Square Given the Area 8. Calculating the Side of a Rectangle Given the Area and One Side 9. Decomposing a Figure into Rectangles to Calculate the Total Area 10. Sum of the Areas of Rectangles as the Area of ​​a Composite Figure The END of this video is available here:    • Dokończenie filmu p.t. Pole prostokąta i k...   More in the Playlist:    • GEOMETRIA NA PŁASZCZYŹNIE   and:    • POLE POWIERZCHNI   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% of the lessons - on Mathematics for Elementary School, High School, and Technical School. Good luck :) Tomasz D. Gwiazda **CHAPTERS** [00:00] Formula for the Area of ​​a Rectangle A × B [01:40] Formula for the Area of ​​a Square A × A or A² [03:37] Calculating the Area of ​​a Rectangle Given Sides [06:10] Calculating the Area of ​​a Square Given Side [07:42] Calculating the Side of a Square Given Area [11:28] Calculating the Side of a Rectangle Given Area and One Side