Question

Jawab no 6 beserta caranya!

Answer 1

P = panjang
L = lebar

P + 7 = 2L
L + 16 = 2P

P - 2L = -7
-2P + L = -16

2P - 4 L = -14
-2P + L = -16
---------------------+
-3L = -30
L = -30/-3
L = 10

P + 7 = 2L
P = 2L - 7
P = (2x10) - 7
P = 20 - 7
P = 13

maka luas persegi panjang
luas = P x L
luas = 13 x 10
luas = 130