Luas Permukaan Selimut Tabung dan Bola Terpotong
DOI:
https://doi.org/10.14421/fourier.2022.111.17-21Keywords:
Bola, Tabung, Bola Terpotong, Selimut Tabung, Luas Permukaan, Sphere, Cylinder, Hemisphere, Circumscribing Cylinder, Surface AreaAbstract
Pada artikel ini ditunjukkan bahwa suatu bola dengan radius dan suatu tabung dengan radius alas dan tinggi , pada saat bola dan tabung tersebut secara bersama - sama dipotong oleh sebuah bidang horizontal yang paralel dengan , maka luas permukaan bola terpotong dan luas permukaan selimut tabung yang berada pada memiliki nilai yang sama. Begitu pula luas permukaan bola terpotong dan luas permukaan selimut tabung yang berada pada memiliki nilai yang juga sama. Pada saat bola dan tabung tersebut secara bersama - sama dipotong oleh dua buah bidang horizontal dan dengan yang paralel dengan maka luas permukaan bola terpotong dan luas permukaan selimut tabung yang berada pada memiliki nilai yang juga sama. Sehingga bagaimanapun suatu luas permukaan bola dan luas selimut tabung dengan ukuran tersebut bersama - sama dipotong secara horizontal akan memperoleh nilai yang sama yaitu sebesar
In this article it is shown that a sphere with radius and a cylinder with a radius and height , since the sphere and cylinder were cut together by a horizontal plane which is parallel to , then the surface area of the hemisphere and the surface area of the circumscribing cylinder at have the same value. Likewise, the surface area of the hemisphere and the surface area of the circumscribing cylinder at have the same value. When the sphere and cylinder are simultaneously cut by two horizontal planes and with which are parallel to , the surface area of the hemisphere and the surface area of the circumscribing cylinder is at m have the same value. So that somehow the surface area of the hemisphere and the circumscribing cylinder with those sizes simultaneously are cut horizontally and will get the same value, which is equal to .
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