What is the area of a square field whose diagonal of length 20 m?
Choose the correct choice from the following options
A) 10 sq m B) 200 sq m C) 400 sq m D) 500 sq m E) 156 sq m
Explanation:   d^2/2 = (20 * 20)/2= 
<gadget id="calculator">(20 * 20)/2</gadget>
<output>200</output>
200 sq m   Answer : 200 sq m
<result>B</result>
What is the area of a square field whose diagonal of length 20 m?