Three

Three points are given: A (-3, 1), B (2, -4), C (3, 3)
a) Find the perimeter of triangle ABC.
b) Decide what type of triangle the triangle ABC is.
c) Find the length of the inscribed circle

Result

o =  20.4667
x = (Correct answer is: RR) Wrong answer
k =  13.7293

Step-by-step explanation:

A=(3,1) B=(2,4) C=(3,3)  a=(BxCx)2+(ByCy)2=(23)2+((4)3)2=5 27.0711 b=(AxCx)2+(AyCy)2=((3)3)2+(13)2=2 106.3246 c=(AxBx)2+(AyBy)2=((3)2)2+(1(4))2=5 27.0711  o=a+b+c=7.0711+6.3246+7.0711=20.4667
a=c x=RR
v=a2(b/2)2=7.07112(6.3246/2)2=2 106.3246 S=2c v=27.0711 6.3246=10 522.3607  r=2 S/o=2 22.3607/20.46672.1851  k=2π r=2 3.1416 2.1851=13.7293



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