(a)[1]
The true separation between two masts is $14\text{ km}$. Find the distance, in cm, between the two masts on the map.
(b)[2]
The area of a lake on the map is $50\text{ cm}^2$. Find the actual lake’s surface area, in $\text{km}^2$.
(c)[1]
Express the scale $5\text{ cm}$ to $2\text{ km}$ as $1 : n$.