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5x * 3x = 735
15x² = 735
x² = 735 / 15
x² = 49
x = √49
x = 7
panjang = 7 * 5 = 35 cm
lebar = 7 * 3 = 21 cm
keliling = 2 (P + L)
= 2 (35 + 21)
= 2 (56)
= 112 cm
5a x 3a = 735
15a² =735
a² =735/15
a² = 49
a =√49
a =7
panjang = 7 x 5 = 35
lebar = 3 x 7 = 21
kliling = 2 (p + l)
= 2 ( 35+21)
= 2 ( 56)
= 112 cm
jawabnnya112 cm