$\"\"$

\

Observe the graph:

\

Consider the scale on the graph at $\"\"$ and $\"\"$ axis are $\"\"$ .

\

Hence, the values are $\"\"$ and $\"\"$ .

\

Find $\"\"$ .

\

$\"\"$ (Pythagorean theorem)

\

$\"\"$ (Substitute $\"\"$ and $\"\"$ )

\

$\"\"$ (Evaluate powers $\"\"$ and $\"\"$ )

\

$\"\"$ (Addition: $\"\"$ )

\

$\"\"$ (Take the square root of each side)

\

$\"\"$ (Cancel square root)

\

$\"\"$ (Substitute: $\"\"$ )

\

Length cannot be negative, so the missing length is $\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .