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= √2500 - 900
= √1600
= 40 cm
L = 1/2at
= 1/2 × 30 × 40
= 600 cm²
c² = 50² - 30²
c² = 2500 - 900
c² = 1600
c = √ 1600
c = 40
tinggi segitiga = 40 cm
luas segitiga = a x t
2
= 30cm x 40cm
2
= 1200 cm²
2
=600 cm²