#### Answer

$a = 1.84 cm$
$b = 3.02 cm$
$c = 0.82 cm$

#### Work Step by Step

Step 1.
Let's find the missing side $a$.
To find a, all you have to do is subtract the dimensions we already know from the total length of the figure.
So,
$a = 13.47 cm - 6.74 cm - 4.89 cm$
$a = 1.84 cm$
Step 2.
To find $b$, you just need to add both length that we already know from the figure.
So,
$b = 1.23 cm + 1.79 cm$
$b = 3.02 cm$
Step 3.
To find $c$, we just have to subtract what we know from the figure from the total length. Because the "c" appears twice we write it as $2c$.
So,
$2c = 2.62 cm - 0.98 cm$
$2c = 1.64 cm$
Solve for $c$
$c = \frac{1.64 cm}{2}$
$c = 0.82 cm$