Question 665723
A boy was flying a kite which was at a height of 40m just above a tree.The string was 50m long. how far away from the tree was the boy flying his kite from? 
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The 50 m string is the hypotenuse of a right triangle.
{{{a^2 + b^2 = c^2}}}
{{{40^2 + d^2 = 50^2}}}
{{{d^2 = 900}}}
d = 30 meters