Question

If the dimensions of base of rectangular prism having height 3 metre is 30 cm $\times$ 40 cm. What will be the volume of this prism?

• A. $0.36$ ${\text{m}}^3$
• B. $3.60$ ${\text{m}}^3$
• C. $36$ ${\text{m}}^3$
• D. $0.036$ ${\text{m}}^3$

Answer 1

The correct option is A $0.36$ ${\text{m}}^3$

Given, height of prism is $3$ $\text{m}$, and base dimensions 30 cm $\times$ 40 cm
We know that $100$ $\text{cm}=1$ $\text{m}$
$\Rightarrow 1\text{cm}=\frac{1}{100}\text{m}$

$\Rightarrow 30\text{cm}=\frac{30}{100}=0.3\text{m}$
Similarly,
$\Rightarrow 40\text{cm}=\frac{40}{100}=0.4\text{m}$

We know,
Volume of prism $=\text{length}\times \text{width}\times \text{height}$
$=3\times 0.3\times 0.4=0.36{\text{m}}^3.$