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'.

[Q]: Problem: the radius of a semi circle is 70 cm then its perimeter is ? 
Options: a ) 32.8 , b ) 32.4 , c ) 360 , d ) 32.2 , e ) 32.9
[A]: c


[Q]: 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
[A]: d


[Q]: Problem: a man can row upstream at 7 kmph and downstream at 33 kmph , and then find the speed of the man in still water ? 
Options: a ) 11 , b ) 77 , c ) 30 , d ) 20 , e ) 34
[A]:
d