Answer:
284.4
Step-by-step explanation:
Given is a picture of a circle as earth and radius = 3959 mi.
THe horizon is the tangent with length unknown x
The hypotenuse of the right triangle is 3959+10.2 = 3969.2 mi.
Hence we get
x using Pythagorean theorem
[tex]x^2+3959^2=3969.2^2\\x^2= 10.2(7928.2)\\x=284.37[/tex]
Round off to nearest 10th
Since ii digit after decimal is 7 >5 we add 1 to the digit after decimal
Answer is 284.4
