Problema Solution
An earthquake could be felt over a 71,810 miles squared area. Up to how many miles from the epicenter could the earthquake be felt? Round to the nearest mile.
Answer provided by our tutors
let
A = 71,810 miles squared is the area of the circle around the epicenter
r = the radius of the circle
pi = 3.14
A = r^2*pi
r^2*3.14 = 71810
by solving we find and consider the positive root (since distance can not be a negative number)
r = 151 miles
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the earthquake can be felt up to 151 miles from the epicenter.