Find the area of the square field if a train 800 metres long passes the field with a speed of 120 kmph in one minute. Choose the correct choice
A) 1.48 sq. km
B) 2.44 sq. km
C) 7.44 sq. km
D) 1.45 sq. km
E) 1.44 sq. km
Explanation:   120 km/hr = 120 * 5/18 = 33.33 m/s   v = d/t ; 33.33 = d/60   d = 2000 m   Hence, in one minute the train travels 2000 m. But, as the train is 800 m long and it passes the field, the length of the field is 2000 – 800 = 1200 m.   Area = 1200 * 1200 = 1.44 sq. km   ANSW1.44 sq. kmR: 1.44 sq. km
<result>E</result>
Find the area of the square field if a train 800 metres long passes the field with a speed of 120 kmph in one minute.