Sagot :
Cevap:
D
Adım adım açıklama:
kisa kenar= x
uzun kenar =3x+15
dikdörtgen cevre= 2(kisa kenar+uzun kenar)
2(x+3x+15)=190
2x+6x+30=190
8x=160
x=20
kisa kenar =20
uzun kenar = 3x+15=3.20+15=75
dikdörtgen alan =kısa kenar x uzun kenar
=20x75 =1500
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