Question

sulvasutras is related to

Answer 1

The four major Sulva Sutras, which are mathematically the most significant, are those composed by Baudhayana, Manava, Apastamba and Katyayana. Out of them the oldest belongs to Baudhayana and dates back to 600BC.

Answer 2

The Shulba Sutras or Śulbasūtras (Sanskrit śulba: "string, cord, rope") are sutra texts belonging to the Śrauta ritual and containing geometry related to fire-altar construction.

List of Shulba Sutras
1) Apastamba
Baudhayana
Manava
Katyayana
Maitrayaniya (somewhat similar to Manava text)
Varaha (in manuscript)
Vadhula (in manuscript)
Hiranyakeshin (similar to Apastamba Shulba Sutras)