Question 210906
    A boat travels due east for a distance of 15 miles. It then travels due North for a distance of 20 miles, at which point it drops anchor. How many miles is the boat from it's starting point?
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Applying Pythagorean theorem:
Let d = distance
then
d^2 = 15^2 + 20^2
d^2 = 225 + 400
d^2 = 625
d = sqrt(625)
d = 25 miles