If the latitude of Chicago is about 42 degrees and the radius of the earth is about 4000 miles, how far ?

Question

is chicago from the equator? ( use pie = 3.1416) Please show your work=]

Thank you!

Answer 1

the circumference of a circle is 2*pi*r

a circle is 360 degrees, the equator is at latitude 0 degrees

so this questions asks how much is 42/360 of a circle of 4000 miles.

enough of a hint?

Answer 2

d = (pi)2(4000)(42/360) = approx 2932.16 miles