Penjelasan dengan langkah-langkah:
9. K = 21+10+17 = 48
s = 48/2 = 24
Luas = √24(3)(14)(7) = √36(2)(49)(2) = (6)(2)(7) = 84
R = [21 x 10 x 17]/(4 x 84)
R = 170/16
R = 10,625 cm
10. r = (2 x a x t )/(a + t + s)
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Penjelasan dengan langkah-langkah:
9. K = 21+10+17 = 48
s = 48/2 = 24
Luas = √24(3)(14)(7) = √36(2)(49)(2) = (6)(2)(7) = 84
R = [21 x 10 x 17]/(4 x 84)
R = 170/16
R = 10,625 cm
10. r = (2 x a x t )/(a + t + s)