Question

5.
a
b
c
d
volume
a
=

b
=

c
=

d
=

Explanation:

Step1: Volume formula for rectangular prism

The volume formula for a rectangular prism is \(V = l\times w\times h\) (length \(\times\) width \(\times\) height).

Step2: Calculate volume of B

For B: \(l = 0.25m\), \(w=0.2m\), \(h = 18cm=0.18m\).
\(V_B=0.25\times0.2\times0.18\)
\(V_B = 0.009m^{3}\)

Step3: Calculate volume of C

For C: \(l = 21m\), \(w = 1.5m\), \(h=42m\)
\(V_C=21\times1.5\times42\)
\(V_C=1323m^{3}\)

Step4: Calculate volume of D

For D: \(l = 1.8m\), \(w = 1.2m\), \(h = 0.5m\)
\(V_D=1.8\times1.2\times0.5\)
\(V_D = 1.08m^{3}\)

Answer:

A. \(12\times5\times11 = 660cm^{3}\)
B. \(0.25\times0.2\times0.18=0.009m^{3}\)
C. \(21\times1.5\times42 = 1323m^{3}\)
D. \(1.8\times1.2\times0.5=1.08m^{3}\)