Kalkulator Rumus Bangun Ruang is an Android-based application developed by Syaban. It is a math education app aimed to help students learn math formulas easily. The app is designed with a simple interface that makes it easy for anyone to use.

The app is divided into two calculators: Volume and Surface Area Calculator for 3D shapes and Area and Perimeter Calculator for 2D shapes. Each section contains a brief explanation of the definition, formulas, and calculator to calculate.

Students can easily enter the data they know, such as diameter, height, length, or width, and click "Calculate". The app will automatically calculate the area, perimeter, or volume of the shape. This app is also helpful for teachers to check their students' answers.

The app includes formulas for various 3D shapes like cube, rectangular prism, cylinder, cone, sphere, prism, and pyramid. Additionally, it also includes formulas for various 2D shapes like circle, triangle, right triangle, square, rectangle, rhombus, parallelogram, trapezoid, pentagon, hexagon, polygon, and the Pythagorean theorem.

Please rate and review the app for further development. Thank you.