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b. L segitiga abc =
=
= 60cm²
1/2 x ac x bd = 252
1/2 x 24 x Bd = 252
BD =252 / 12 = 21 cm
b. 1/2 x Alas x Tinggi = L. Segitiga ABC
Ac x do = 24 x 5 = 120cm²