Answer:
Check your addition. Units need to be supplied with your final answer.
Explanation:
It appears you want the total area of the figure. You have correctly figured the area of the rectangle and the dimensions of the triangle.
You have correctly figured the area of the triangle, but your final total is off.
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It is helpful to the casual reader (and perhaps your teacher) if you identify what each calculation is supposed to be doing.
The formula for the area of a triangle is
A = (1/2)bh
It is all one product. I would write it as (1/2)(19)(12) = 114. I would actually compute it as 19·6 = 114.
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In cm^2, the area of the rectangle is ...
rectangle area = L·W = 22·17 = 374
The area of the triangle is ...
triangle area = (1/2)bh = (1/2)(19)(12) = 114
The total area is
total area = rectangle area + triangle area = 374 + 114 = 488 . . . . cm^2