Why is there a difference of 281 km between latitudinal and longitudinal distance of India?

The difference of 281 km between latitudinal and longitudinal distance in India arises from the Earth's curvature and the way latitude and longitude lines are structured. Latitude lines are parallel and equally spaced, while longitude lines converge at the poles. In India, which spans approximately 30 degrees of latitude and 78 degrees of longitude, the distance covered by one degree of longitude decreases as one moves away from the equator, while the distance covered by one degree of latitude remains relatively constant, leading to this discrepancy.