Described 7872

The KLM isosceles triangle, the KL base is 24 cm long, and the arm measures 15 cm. What is the radius of the circle described by this triangle?

Correct answer:

r =  12.5 cm

Step-by-step explanation:

m=24 cm k=15 cm l=k=15 cm  x=m/2=24/2=12 cm  cosK=x/l  K=π180°arccos(x/l)=π180°arccos(12/15)36.8699   r=2 sinKk=2 sin36.869897645844° k=2 sin36.869897645844° 15=2 0.615=12.5=225 cm=12.5 cm

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