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Verified answer
Luas Segitiga= 1/2 × 18 × 6
= 54
Jari jari
= 6 × 18 × 20/4.54
= 29160
Semoga membantu ^^
Bab Lingkaran
Kata Kunci : Lingkaran luar segitiga
6, 18 dan 20 bukan Tripel Pythagoras
S = 1/2 . (a + b + c)
S = 1/2 . (6 + 18 + 20)
S = 1/2 . 44
S = 22 cm
L = √(S . (S - a) . (S - b) . (S - c))
L = √(22 . (22 - 6) . (22 - 18) . (22 - 20))
L = √(11 . 2 . 16 . 4 . 2)
L = 16√11 cm²
r = abc/4L
r = 6 . 18 . 20/(4 . 16√11)
r = 135/(4√11)
r = (135/44) √11 cm