<u>Answer:</u>

<u>Step-by-step explanation:</u>
To find the value of
, we have to first find the lengths of the sides of the squares and add them.
The formula for area of a square is as follows:

This means the length of a side of a square can be found by:

Now we can find the lengths of sides of each of the squares:
• Length of side of larger square = 
= 90
• Length of side of smaller square = 
= 4
Next we can just add the lengths of the sides to get the value of
:

⇒ 