Di bantu no 27-32 sama cara. Makasih

27) L = s²
= 25 × 25
= 625 cm²

28) V = r³
= 27³
= 19.683 cm³

29) d = 5 ltr/mnt
w = 1 jam = 60 mnt
v = d × w
= 5 ltr/mnt × 60 mnt
= 300 liter

30) 0,2 liter/dtk
= 0,2 × (1 ÷ 1/3600)
= 0,2 × 3600
= 720 liter/jam

31) L1 = s²
= 28 × 28
= 784 cm²
L2 = ½ × a × t
= ½ × 28 × (28 ÷ 2)
= ½ × 28 × 14
= 196 cm²
L3 = ½ × π × r²
= ½ × 22/7 × 14 × 14
= 308 cm²
Luas diarsir
= L1 - L2 - L3
= 784 - 196 - 308
= 280 cm²

32) Lpp = p × l
= 25 × 16
= 400 cm²
Lp = Lpp
Lp = s²
400 = s²
s = √400
s = 20 cm