Answer:
a 25 square units
Explanation:
first find the length of the two sides of the triangle (sides of square 1 and 2)
the perimeter of a square is the length of the side × 4
so to find the length of the side, divide the perimeter by 4
perimeter of square 1: 12 units
divide it by 4: 3 units, so that's the length of side 1
perimeter of square 2: 16 units
divide it by 4: 4 units, so that's the length of side 2
now use a2 + b2 = c2
3 squared + 4 squared = c2
and solve
9 + 16 = c2
25 = c2
square root of 25 = square root of c2
5 = c
So now multiply 5 × 5 to find the area of the square
25