TASK DEFINITION: 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'.
PROBLEM: Problem: in what time will a train 140 meters long cross an electric pole , if its speed is 210 km / hr 
Options: a ) 5 seconds , b ) 4.5 seconds , c ) 3 seconds , d ) 2.4 seconds , e ) none of these

SOLUTION: d

PROBLEM: Problem: what is the length of a bridge ( in meters ) , which a train 156 meters long and travelling at 45 km / h can cross in 30 seconds ? 
Options: a ) 203 , b ) 211 , c ) 219 , d ) 227 , e ) 235

SOLUTION: c

PROBLEM: Problem: the sector of a circle has radius of 21 cm and central angle 130 o . find its perimeter ? 
Options: a ) 89.7 , b ) 91.4 , c ) 91.7 , d ) 91.3 , e ) 91.1

SOLUTION:
a