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Question

Liz starts walking from her house at O, she walks 24 m towards west to a point A, then takes a sharp turn towards north and walks 7 m before stopping at the bus stop at point B as shown in the diagram. Then, the distance between her house and the bus stop is(in m)


  1. 25

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Solution

The correct option is A 25
The distance between Liz's home and the bus stop is the length of the hypotenuse OB
ΔOAB is a right triangle.
By Pythagorean theorem
OB2=AB2+OA2
OB2=242+72=576+49=625
OB=625=25 m
Distance between Liz and the bus stop is 25 m

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