Question

The radius of the Earth is about 4000 mi. To the nearest mile, find the distance d that a person can see on a clear day from a height of h = 5 mi above the Earth.
http://cdn.activelms.com/data/042c73b1-ddf5-4fd6-91e7-6c8434228f3d/Geometry%20Images/unit%2012-1%20q10.png
a) 63 mi.
b) 200 mi.
c) 4000 mi.
d) 5660 mi.

Answer 1

i think it b)

Answer 2

you can use trig to find the answer (200 miles)

Answer 3

use pythagoras theorem
40005^2 = 4000^2 + d^2

Answer 4

is another way to do it

Answer 5

though pythagoras looks good.