Sail Boat Sails Diagram Maths Question Pythagoras Gcse?

Maths question pythagoras gcse? - sail boat sails diagram

Can anyone tell me what I do, this question:)
their pythagorous, and on one level, Class B.

* Make sure the chart is the angle of any point in the right corner.
27 km C
------------
- --
- --
- 30km
- B

that
^ ^ ^

The graph shows a journey from A to B to position the ship is proceeding from a 27-km position C. The progress of the lesions and sailboat 30 miles from the position B is on the map, the distance bewteen A and C, 10,8 kN

a) determining the extent of mappp?


Who knows how to work with the circumference of a triangle phythagorouss?

OUTTT help me = [
xx