Considering the perimeter (P)

where b is the base and h is the height, then

Being the area (A)
Answer:
Step-by-step explanation:
By inscribed angle theorem:

You would multiply 1.8 × 48 to find your answer.
1.8
×48
--------
14.4
+72.0
--------
86.4
So the cyclist travels 86.4 km