Given points are A(1,−2), B(a,6), and C(23,−2).
- The circumcenter O is (35,4).
Calculate AO and BO (Using Distance Formula): - AO=BO:
(a−5)2+(4a+2)2=(a−5)2+(4a−6)2
Solving this gives a=8.
Determine Side Lengths of the Triangle: - With a=8: AB=8, AC=6, BC=10.
Calculate Circumradius (α), Area (β), and Perimeter (γ): - Circumradius α=5, Area β=24, Perimeter γ=24
Compute α+β+γ:
α+β+γ=5+24+24=53
So, the correct option is: 53