Answer:
<h2>a. V = 420 cm³</h2><h2>b. V = 444 in³</h2><h2>c. V = 108 cm³</h2><h2>d. V = 324 m³</h2>
Step-by-step explanation:
We have the rectangular prisms.
The formula of a volume of a rectangular prism is:

l - length
w - width
h - height
==========================================
Look at the picture.
a.
Two congruent rectangular prisms 14cm × 3cm × 5cm.

b.
One rectangular prism 15in × 4in × 6in and next 7in × 4in × 3in:

c.
One rectangular prism 10cm × 3cm × 2cm and next 4cm × 3cm × 4cm:

d.
One rectangular prism 10m × 3m × 6m and next 8m × 3m × 6m:

Answer: 2 miles
Step-by-step explanation:
Afternoon-x; morning- 1.5x; Evening: 1/2x
Make a equation: 1.5x+x+1/2=6
2.5x+1/2x=6
5/2x+1/2x=6
6x=12
x=2