Arjun realized the "Class 9 Math" file he had downloaded wasn't just a textbook—it was a digital scavenger hunt created by a retired math teacher known for his eccentricity. To find the "treasure" (which rumors suggested was a legendary set of solved board papers from the last thirty years), Arjun had to solve the problems in the book to unlock the next GPS coordinates. The First Hurdle: He had to calculate the Area and Volume
1. Understanding ICSE Mathematics by M.L. Aggarwal (Avichal Publishing Company) icse math class 9 book pdf