a. p = 5 x 2 cm = 10 cm
l = 4 x 2 cm = 8 cm
t = 3 x 2 cm = 6 cm
b. L = 480 cm³
Penjelasan dengan langkah-langkah:
misal
p = 5a
l = 4a
t = 3a
menentukan nilai a
2(pl + pt + lt) = L
pl + pt + lt = L/2
5a x 4a + 5a x 3a + 4a x 3a = 376/2
20a² + 15a² + 12a²= 188
47a² = 188
a² = 188/47
a² = 4
a = √4 = 2
b. L = p x l x t
= 10 x 8 x 6
= 480 cm³
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a. p = 5 x 2 cm = 10 cm
l = 4 x 2 cm = 8 cm
t = 3 x 2 cm = 6 cm
b. L = 480 cm³
Penjelasan dengan langkah-langkah:
misal
p = 5a
l = 4a
t = 3a
menentukan nilai a
2(pl + pt + lt) = L
pl + pt + lt = L/2
5a x 4a + 5a x 3a + 4a x 3a = 376/2
20a² + 15a² + 12a²= 188
47a² = 188
a² = 188/47
a² = 4
a = √4 = 2
a. p = 5 x 2 cm = 10 cm
l = 4 x 2 cm = 8 cm
t = 3 x 2 cm = 6 cm
b. L = p x l x t
= 10 x 8 x 6
= 480 cm³