a). V = p x l x t

1.920 cm³ = 16 x 10 x t

1.920 cm³ = 160 x t

t = 1.920/160

t = 12 cm

b). V = p x l x t

5.100 cm³ = 20 x l x 17

5.100 cm³ = 340 x l

l = 5.100/340

l = 15 cm

c). V = p x l x t

4.050 cm³ = p x 9 x 30

4.050 cm³ = p x 270

p = 4.050/270

p = 15 cm

d). V = p x l x t

3.960 cm³ = p x 12 x 22

3.960 cm³ = p x 264

p = 3.960/264

p = 15 cm

e). V = p x l x t

7.500 cm³ = 25 x l x 15

7.500 cm³ = 375 x l

l = 7.500/375

l = 20 cm

f). V = p x l x f

8.232 cm³ = 28 x 14 x t

8.232 cm³ = 392 x t

t = 8.232/392

t = 21 cm

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• V = luas alas x tinggi

= 216 cm² x 15

= 3.240 cm³

• V = p x l x t

2.600 cm³ = p x 13 x 2p

2.600 cm³ = 26p²

p² = 2.600/26

p² = 100

p = √100

p = 10 cm

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