Composite figure is made up of 4 triangles and a square.
Area of Square = Length x Length
Area of Square = 12 x 12
Area of Square= 144 cm²
Area of triangle = 1/2 x base x height
Area of triangle = 1/2 x 12 x 8
Area of triangle = 48 cm²
Area of 4 Triangles = 48 x 4
Area of 4 Triangles = 192 cm²
Total Area = 144 + 192 = 336 cm²
Answer:
A = (2x+1)(3x+4)
Step-by-step explanation:
Area is length × height

We have to use the formula:

So,

Also, it will be

Hope you could understand.
If you have any query, feel free to ask.
If i read this correctly then the answer would be
57-12= 45
45/9= 5
The answer is 5