two poles of 10 m and 15 m stand upright on a plane ground.If the distance between the tops is 13 m,find the distance between their feet?

Dear student,


The figure below shows two poles AB and CD such that AB = 10 m and CD = 15 m;


And the distance between the top of two poles = BD = 13 mAlso, CE=AB=10 m  and DE=DC-CE=15m-10m=5mApplying Pythagoras theorem in rt BED,BD2=BE2+DE2132=BE2+52169=BE2+25BE2=169-25=144BE=144=12mBut BE=ACAC=12mThus, the distance between their feet is 12 m 
Regards

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the distance of the feet is 12m
 
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