Jawabanmu

2014-06-01T12:28:00+07:00
S = 1/2 x kel segitiga = 1/2 x (10+24+26) = 30
Luas segitiga = 1/2 x alas x tinggi = 1/2 x 10 x 24 = 120
panjang r dalam = L segitiga / s = 120/30 = 4
2 2 2
Jawaban paling cerdas!
2014-06-01T12:30:54+07:00
R = 2L ÷ k
r = 2 (1/2 . 10 . 24) ÷ (10 + 24 + 26)
= 240 ÷ 60
= 4 cm
1 5 1