In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
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Question: Problem: the length of the bridge , which a train 130 metres long and travelling at 108 km / hr can cross in 30 seconds , is : 
Options: a ) 200 m , b ) 225 m , c ) 245 m , d ) 170 m , e ) 240 m

Answer: d


Question: Problem: the sector of a circle has radius of 21 cm and central angle 180 o . find its perimeter ? 
Options: a ) 91.5 , b ) 92 , c ) 108 , d ) 94 , e ) 95

Answer: c


Question: Problem: a train 360 m long is running at a speed of 45 kmph . in what time will it pass a bridge 140 m long ? 
Options: a ) 40 sec , b ) 42 sec , c ) 45 sec , d ) 48 sec , e ) 49 sec

Answer:
a