tolong jawab moral 6-10 yaa

9. L = 60 cm
p x l = 60 cm
( l + 7 )l = 60
l^2 + 7l = 60
l^2 + 7l - 60 = 0
12 x -5 =-60
12 + -5 =7
(l+12) (l-5)
l+12=0. l-5 =0
l = -12. l=5


p = l +7
= 5 + 7
= 12 cm

l = 5
K = 2p + 2l
K = 34