Question 1179689
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Make a sketch.


In the sketch, find a right-angled triangle and apply the Pythagorean theorem.


    |AB| = {{{2*sqrt(10^2-2^2)}}} = {{{2*sqrt(96)}}} = {{{2*4*sqrt(6)}}} = {{{8*sqrt(6)}}} = 19.6 cm  (rounded).    <U>ANSWER</U>
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Solved.