October 2018 1 22 Report
1. Luas Segitiga ABC = 6 cm2 , sedangkan panjang jari-jari lingkaran dalamnya 1 cm, panjang Ab = 3 cm dan BC = 4 cm. Panjang jari-jari lingkaran luarnya adalah.....

a. 2,5 cm
b. 5,5 cm
c. 6,5 cm
d. 8 cm

Tolong bantuin pake cara ya.. Terima Kasih :)

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