7. 25 + 64 = 89
8. l = s × s = 24 × 15 = 360
360 : 30 = 12
jadi, lebar persegi panjang yang lain adalah 12 cm
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7. 25 + 64 = 89
8. l = s × s = 24 × 15 = 360
360 : 30 = 12
jadi, lebar persegi panjang yang lain adalah 12 cm
8. L persegi panjang = p x l
p x l = p lain x l lain
24 x 15 = 30 x l
360 = 30 l
12 = l