Question 1183565
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<pre>

From the area of the rectangle, 23*25 cm^2, subtract the area of the right-angled triangle 

with the legs of  23-14 = 9 cm  and  25-16 = 9 cm


    the area under the problem's question =  {{{23*25 - (1/2)*9*9}}} = 534.5 cm^2.    <U>ANSWER</U>
</pre>

Solved.