[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of the Kerala School of Hindu Astronomy (in Perspective)](https://indike.org/pramana/ins.science.sarma-1972) › c8.s5.4 # A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s5.4 A History of the Kerala School of Hindu Astronomy (in Perspective) c8.s5.4 - **Language:** English ### [c8.s5.4](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.4) ‘The three sums of the products of the sides, taken two at a time, are to be multiplied together and divided by the product of the sums of the sides taken three at a time and diminished by the fourth. If a circle is drawn with the square root of this quantity as radius, the whole quadrilateral will be situated inside it.’ - [Previous: c8.s5.3](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.3) - [Next: c8.s5.5](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.5) - [Up: c8.s5](https://indike.org/pramana/ins.science.sarma-1972.c8.s5) --- Source: [https://indike.org/pramana/ins.science.sarma-1972.c8.s5.4](https://indike.org/pramana/ins.science.sarma-1972.c8.s5.4) · Pramāṇa