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: if the wheel is 21 cm then the number of revolutions to cover a distance of 1056 cm is ?
Options: a ) 8 , b ) 27 , c ) 10 , d ) 7 , e ) 19
[A]: a

[Q]: Problem: a courtyard is 25 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm . the total number of bricks required is
Options: a ) 16000 , b ) 18000 , c ) 20000 , d ) 22000 , e ) 24000
[A]: c

[Q]: Problem: the speed of a car is 70 km in the first hour and 90 km in the second hour . what is the average speed of the car ?
Options: a ) 79 kmph , b ) 80 kmph , c ) 34 kmph , d ) 23 kmph , e ) 14 kmph
[A]:
b