What is the area of a square field whose diagonal of length 10 m?	Pick one:
A) 50  B) 70  C) 60  D) 20  E) 25
d2/2 = (10 * 10)/2= 
<gadget id="calculator">(10 * 10)/2</gadget>
<output>50</output>
50   50nswer:50
<result>A</result>
What is the area of a square field whose diagonal of length 10 m?