10. Lisa takes a shortcut from one corner of the rectangular field
of dimensions 168 m by 26 m to the opposite corner. What
distance does she travel?
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Step-by-step explanation:
ABCD is a rectangular field of Length = 40m, Breadth = 30m, ∠B=90o
In the right angled triangle ABC,
By Pythagoras Theorem,
AC2=AB2+BC2
=302+402=900+1600
=2500
∴AC=2500=50m
Distance from A to C through B is
=30+40=70m
Distance saved =70−50=20m.
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