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=240
Semoga betul :D
68 cm = 4.S
S = 68 : 4 = 17 cm
Pphytagoras :
= √(17² - 15²)
= √(289 - 225)
= √648
= 8 cm
= 8 cm + 8 cm = 16 cm
L = ½ x d₁ x d₂
= ½ x 30 cm x 16 cm
= 240 cm²
Semoga membantu!Tandai sebagai yang terbaik