tolong di jawab 3 soal ini besok di kumpul.yang mana tau aja.tolong jawab yang benar ya makasih

1.
s1 = 2x = terpendek
s2 = 3x
L = 50 cm2
t = 5 cm

L = (a+b)t/2
50 = (2x+3x)5/2
100 = 5x.5
100/5 = 5x
20 = 5x
x = 20/4
x = 5

Terpendek = 2x
= 2.5
= 10 cm

2.
Luas yg di cat
= pl+pt+2lt
= 3,5×3+3,5×3+2×3×3
= 10,5+10,5+18
= 39 m2
luas pintu
= p×l
= 0,8×2,2
= 1,76 m2
luas jendela
= p×l
= 1,2×1,6
= 1,92 m2
39-1,76-1,92= 35,32 m2
35,32 = 36 kaleng cat

3.
K = 64 cm
p = 3l

K = 2(p+l)
64 = 2(3l+l)
64/2 = 4l
32 = 4l
l = 32/4
l = 8 cm
p = 3l
p = 3.8
p = 24 cm

L = p×l
L = 24×8
L = 192 cm2