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alas = 6
ditanya: tinggi segitiga?
luas segitiga?
jawab: tinggi segitiga = a
a²= b²-c²
= 10²-6²
= 100-36
= 64
a = √64
= 8
maka alasnya= 8
luas segitiga= 1/2×a×t
= 1/2×8×6
= 4×6 ⇒ 4 dari 8×1/2 atau 8÷2
= 24 cm²