What’s the perimeter and area?

Iwill give you ! what is the measure of ∠v ?

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

What is the value of x? assume that the line is tangent to the circle.