tolong guys tolong yaaa

p = 5a
l = 3a

Luas persegi panjang = p × l
735 = 5a × 3a
735 = 15a²
a² = 735/15
a² = 49
a = √49
a = 7 cm

p = 5a = 5 × 7 = 35 cm
l = 3a = 3 × 7 = 21 cm

Keliling = 2(p + l)
= 2(35 + 21)
= 2(56)
= 112 cm
Jawabannya C.