Question 643482
A boy walks due east, 100 m and then walks 150 m due north.
 How far is the boy from the starting point?
:
This is a right triangle problem a^2 + b^2 = c^2, where:
a = 100 m
b = 150 m
c = distance from starting part
:
c = {{{sqrt(100^2+150^2)}}}
c = 180.3 m from starting point