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= √225
= 15
luas layang2 = 2 x luas Δ
= 2 x 1/2 x alas x tinggi:.
= 2 x 1/2 x jari2 x garis singgung
= 2 x 1/2 x 8 x 15
= 120
panjang tali busur AB = diagonal kedua
Luas = (d1 x d2)/2
120 = ( 17 x d2) /2
120 x 2 = 17 d2
240 = 17 d2
d2 = 14,1