1 sampai 5 please...bantu aku yaaa

1 .Luas = 22/7 x (3,5+3,5) x (3,5+3,5)
= 22/7 x 7 x 7
= 154 m2
2. Panjang kerangka = 4 ( p + l + t )
= 4 (120+60+80)
= 4 . 260
= 1040cm
= 10,4 m
Harga : 10,4 x 8000 = Rp83.200,00
3. V kubus = s x s x s
216 cm = s x s x s
s = 6 cm (akar pangkat 3)
Lp = 6 x s x s
= 6 x 36
= 216 cm2
4. V = p.l.t
420 = p.l.10
p.l = 42
p = 7 l = 6
Lp = 2 ( (6.7) + (6.10) + (7.10) )
= 2 ( 42+60+70 )
= 2 . 172 = 344
5. L alas = d1 x d2 x 1/2
= 1/2 . 80 = 40
volume limas = 1/3 . luas alas . tinggi
= 1/3 . 40 . 12 = 160