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98 =2(7x)
98 = 14x
x = 7 cm
panjang = 35 cm
lebar = 14 cm
Luas = 35 Kali 14 =490 cm²
l = 2x
2(p + l) = K
2(5x + 2x) = 98
5x + 2x = 49
7x = 49
x = 7
p = 5x
= 5(7)
= 35 cm
l = 2x
= 2(7)
= 14 cm
L = p × l
= 35 cm × 14 cm
= 490 cm²