1

is the answer you're looking for.
The answer is 8, because 64÷8= 8!simple
Answer:
x=21°. :Angles subtended by the same arc
y=42°. :180-(117+21),angles subtended by the same arc
18 miles
183.6 divided by 10.2 = 18, and to check the answer if we multiply 18 and 10.2 it equals 183.6