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52 = 4s
s = 52/4
s = 13 cm
diagonal lainnya maka
2 (√13²-(10:2)²
2 (√13²-5²)
2 (√169-25)
2 (√144)
2 (12)
24 cm
luas = d1 x d2 x 1/2
luas = 10 x 24 x 1/2
luas = 10 x 12
luas = 120 cm²
d1 = 10 cm
jawab : k = 4s
52 = 4s
s = 13 cm
pakai phytagoras (bila sudah diajarkan)
d2 = √13²-5²
= √169-25
= √144
= 12 × 2
= 24 cm
L = ½ × d1 × d2
= ½ × 10 × 24
= 5 × 24
= 120 cm²