What is the area of a square field whose diagonal of length 30 m?	Pick:
A) 287	B) 269	C) 450	D) 200	E) 230
d2/2 = (30 * 30)/2= 
<gadget id="calculator">(30 * 30)/2</gadget>
<output>450</output>
450   Answer:450
<result>C</result>
What is the area of a square field whose diagonal of length 30 m?