Express the following scale as a ratio in the form $1:\editable{}$1:.
1 cm represents $240$240 cm.
$1:\editable{}$1:
A map has been drawn to a scale of $1:7000$1:7000. Find, in metres, the actual distance between two points if the map distance between the points is $8$8 mm.
On a house plan that has been drawn to a scale of $1:100$1:100, the building is drawn to a length of $158$158 mm. What is the actual length of the building?
A commercial plane measuring $66$66 metres long is to be represented on a scale model with a scale of $1:100$1:100. Find, in metres, the length of the plane in the scale model.