What is the area of a square field whose diagonal of length 40 m? Answers.
A) 287
B) 269
C) 750
D) 200
E) 800
d2/2 = (40 * 40)/2= 
<gadget id="calculator">(40 * 40)/2</gadget>
<output>800</output>
800   Answer:800
<result>E</result>
What is the area of a square field whose diagonal of length 40 m?