The length of swimming course is 345.93 meters.
Step-by-step explanation:
Given,
BC = 80 m
AB = 145 m
Using pythagoras theorem to find AC.
[tex]AC^2+BC^2=AB^2\\AC^2+(80)^2=(145)^2\\AC^2+6400=21025\\AC^2=21025-6400\\AC^2=14625[/tex]
Taking square root on both sides
[tex]\sqrt{AC^2}=\sqrt{14625}\\AC=120.93m[/tex]
Length of swimming course = AB + BC + AC
Length of swimming course = 145 + 80 + 120.93 = 345.93 m
The length of swimming course is 345.93 meters.
Keywords: square root, addition
Learn more about addition at:
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