Question

why the houses in Rajasthan have thick walls and flat roofs

Answer 1

>to retain temperature within the house,and

>to prevent damages to the house from sandstorms(flat roofs)

Answer 2

the weather of Rajasthan is very hot and it recieves very low rainfall the thick walls of houses insulate the people against the summer and to extreme cold in winter.

the main reason is to keep cold in summer