Question

what is the missing side length? first, find the area of the two smaller squares and use them to find the area of the larger square. input the areas. then click done.

Explanation:

Step1: Calculate area of square 1

Area = $9^2 = 81$

Step2: Calculate area of square 2

Area = $12^2 = 144$

Step3: Calculate area of square 3

Area = $81 + 144 = 225$

Step4: Find missing side length $x$

$x = \sqrt{225} = 15$

Answer:

Area of square with side 9: $81$
Area of square with side 12: $144$
Area of square with side $x$: $225$
Missing side length $x$: $15$