The latitudinal and longitudinal extent of India is
approximately the same i.e. 30o. The Andaman and Nicobar Islands extend
further southwards and add to the latitudinal extent of India. The latitudinal extent of India from Kashmir in the
north to Kanyakumari in the south is 3,214 km. India's longitudinal
extent from the Rann of Kutch in the west to Arunachal Pradesh in the
east is 2,933 km.
If we look at maths point of view, the radius of earth along the lattitude and along the longitude could be different as earth's surface is not exactly spherical. radius along lattitude could probably be bigger? not sure.