What is the shape of the Earth?

Asha walk $3 km$ Southward and then turns right and walks $2 km$. She again turns right and walks $3 km$ and tuns towards her left and starts walking straight.

In which direction is she walking now?

The Earth's radius is slightly different if it is measured to the poles or to the equator. The distance from the centre of the Earth to the poles, the polar radius, is $6356.8 \mathrm{km}$ whereas the distance to the equator, the equatorial radius, is slightly larger at $6378.1 \mathrm{km}$.

If the Earth were shrunk to a polar radius of $11 \mathrm{cm}$, by how much would the equatorial radius be larger $?$

Form can be misleading. On the left is an orchid mantis. This is an insect pretending to be a flower. On the right is a bee orchid-a flower pretending to be an insect. What advantages are there to imitating another form? 

How spherical is the Earth $?$

The radius of the Earth is $6371 \mathrm{km}$. Mount Everest is the highest point above sea level at $8848 \mathrm{m}$.

If the Earth were shrunk to the size of a football with a radius of $11 \mathrm{cm}$, how high would Mount Everest be $?$