Dear Student,
a. India's road networks is approximately 2.3 million km.
b. Its rail network as per the recent data is 119,630 kilometres of the total track and 92,081 km of running track ( Indian railway statistical publication, 2014-15)
c. Its railway route length is 63, 221 km.
d. Length of India's coastline is 7516.6 km.
Regards