Solution

24921

Problem / game
First name
ChrisRuston
School
Junior Kings Canterbury
Age
12

Step 1 :
find the area of each of the squares by squaring them
1,16,49,64,81,100,196,225,324

Step 2 :
Add them all together = 1058

Step 3 :
Factorise 1058 =
2x23x23

Step 4 :
Find the possible rectangles =
all of the other rectangles don't work because they don't equal 1058 which is the target number.

23x46 = 1058