Read the following information carefully and answer the questions that follow. Roughly extending from $8^{\mathrm{o}}$ North to ${38}^{\mathrm{o}}$ latitude and from ${68}^{\mathrm{o}}$ east to ${98}^{\mathrm{o}}$ east. Longitude the country of India is of great geographical extent and diversities. It sprawls from the snowy ranges of the Himalayas in the north to the shores of the Indian Ocean in the south through the Great Plains and plateaus in between. It is about $3200 \mathrm{km}$ in length from North (Kashmir) to South (Kanyakumari) and $2900 \mathrm{km}$ from West (Gujarat) to East (Arunachal Pradesh). Its vastness in area and variation-in topographic character and geological structure result in great diversities in climate, vegetation, soil, cropping pattern, human activities and so on across the country. It is often known as a subcontinent.

Although the extents of latitude and longitude are same, i. e., ${30}^{\mathrm{o}}$ why is India's North-South length longer than the East-West length by $300 \mathrm{km}$?