Answer:
2200 cm^2
Explanation:
the area of a triangle is base time heigh times one half. The base of the triangle is 40 cm and the height of the triangle is 30cm. So, multiply those together and you get 1200cm. Now, multiply 1200cm by one half. The answer is 600cm. Now, we move on to find the area of the square. A square is equal on all sides, so it would be one side squared. Since you are multiplying length by width and a square has even sides, you can get away with squaring one side to get your answer. 40 squared is 1600. The last step is to add the triangle's area and the square's area together. 1600 plus 600 equals 2200. And because you square it, it is 2200 cm^2.
Hope this helps! :)