Question

9.
$\frac{3}{10}$ cm
$\frac{1}{2}$ cm

Explanation:

Step1: Recall area formula

The area formula for a rectangle is $A = l\times w$, where $l$ is the length and $w$ is the width.

Step2: Identify length and width

Here, $l=\frac{1}{2}\text{ cm}$ and $w = \frac{3}{10}\text{ cm}$.

Step3: Calculate area

$A=\frac{1}{2}\times\frac{3}{10}=\frac{1\times3}{2\times10}=\frac{3}{20}\text{ cm}^2$.

Answer:

$\frac{3}{20}\text{ cm}^2$