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: a man can row upstream at 5 kmph and downstream at 25 kmph , and then find the speed of the man in still water ? 
Options: a ) 15 , b ) 77 , c ) 30 , d ) 88 , e ) 34

SOLUTION: a

PROBLEM: 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

SOLUTION: c

PROBLEM: Problem: the sector of a circle has radius of 24 cm and central angle 135 o . find its perimeter ? 
Options: a ) 91.5 cm , b ) 11.5 cm , c ) 104.6 cm , d ) 92.5 cm , e ) 99.5 cm

SOLUTION:
c