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Dengan volume kubus:
V = s³
Maka,
a.)
V = 15³
V = 3.375 cm³
b.)
V = 20³
V = 8.000 cm³
Nomor 3.
a.)
Volumenya:
= p x l x t
= 12 x 8 x 6
= 576 cm³
Luas sisinya (Luas permukaan)
= 2(pl+pt+lt)
= 2(12.8+12.6+8.6)
= 2(96+72+48)
= 2 x 216
= 432 cm²
b.)
Volumenya:
= p x l x t
= 15 x 12 x 8
= 1.440 cm³
Luas sisinya (Luas permukaan)
= 2(pl+pt+lt)
= 2(15.12+15.8+12.8)
= 2(180+120+96)
= 2 x 396
= 792 cm²
Nomor 4.
Maka,
V = p x l x t
1.200 = 15 x 10 x t
1.200 = 150t
Maka,
t = 1.200/150
t = 8 dm
Tinggi bak mandinya adalah 8 dm
Nomor 5.
V = s³
Maka,
s = ∛V
s = ∛15.625
s = 25 cm
Panjang sisinya adalah 25 cm
a. V = 15^3 = 3357 cm^3 LP = 6(15)^2 = 6(225) = 1350 cm^2
b. latihan sendiri
3. V = p x l x t , LP = 2(pl + pt + lt)
a. V = 12.8.6 = 576 cm^3 LP = 2(12.8+12.6+8.8) = 2(96+72+64) = 464 cm^2
b. latihan sendiri
4. V = p.l.t
1200 = 15.10.t
1200 = 150t
t = 8 dm
5. V = s^3
15625 = s^3
s =
s = 25 cm