Answer:
- 84cm³
- 10cm
- 432cm³
- 5,400cm³
- 7cm
Step-by-step explanation:
1.
V = lwh
= (7cm)(4cm)(3cm)
= (28cm²)(3cm)
V = 84cm³
2.
V = lwh
4500m³ = (30cm)(w)(15cm)
4500m³ = 450cm²w
4500m³ ÷ 450cm² = 450cm²w ÷ 450cm²
w = 10cm
3.
V = lwh
= (18cm)(12cm)(2cm)
= (216cm²)(2cm)
V = 432cm³
4.
V = lwh
= (30cm)(18cm)(10cm)
= (540cm²)(10cm)
V = 5,400cm³
5.
V = lwh
945cm³ = (15cm)(9cm)(h)
945cm³ = 135cm²h
945cm³ ÷ 135cm² = 135cm²h ÷ 135cm²
h = 7cm
