Tolong yg no. 2 & 5 ..
Jawaban Terkonfirmasi
2.
l = p – 3
L = pl = p(p-3) = 340
p² – 3p – 340 = 0
(p-20)(p+17) = 0
p = 20 cm
panjang = 20 cm
untuk l = p -3 = 17cm
lebar = 17 cm
5.
p = 3l
L =pl = 432
3l(l) = 432
l² = 432 : 3
l = √144 =12 dm
panjang pintu = 12 dm
^_^ selamat belajar yh