Question

A boy was flying a kite which was at a height of 40m just above a tree. The string was 50 m long . How far was the boy from the tree ?

Answer 1

just consider Pythagoras theorem
that is
base^2+alt^2=hyp^2

Answer 2

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Let the distance between the boy and the tree be 'd'.

$\bold{By\:Pythagoras\:theorem,}$

$d ^{2} = {50}^{2} - 40^{2}$

$d^{2} = 2500 - 1600$

${d}^{2} = 900$

$d = \sqrt{900}$

$d = 30$

$\bold{Therefore,}$

The distance between the boy and the tree is $\bold{30\:m}$
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