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Semoga membantu ..( jawaban ny 480 cm²)
k = 4 x sisi
104 = 4 x sisi
104 : 4 = sisi
26 = sisi
d1 = 48 : 2 = 24
rumus phytagoras ; 26 pangkat 2 - 24 pangkat 2
= 676-576
= akar 100
= 10 cm
d2 = 10+10
d2 = 20 cm
L = ½ x d1 x d2
L = ½ x 48 x 20
L = 480cm²
jawabannya a 480cm²