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: the radius of the wheel of a bus is 70 cms and the speed of the bus is 66 km / h , then the r . p . m . ( revolutions per minutes ) of the wheel is 
Options: a ) 200 , b ) 250 , c ) 300 , d ) 330 , e ) none of these
b

Problem: a bicycle wheel has a diameter of 0.51 m . how many complete revolutions does it make in 1 km ? 
Options: a ) 246 , b ) 448 , c ) 1408 , d ) 710 , e ) 624
e

Problem: nd the area of trapezium whose parallel sides are 20 cm and 18 cm long , and the distance between them is 15 cm ? 
Options: ['a ) 766 cm 2', 'b ) 535 cm 2', 'c ) 285 cm 2', 'd ) 324 cm 2', 'e ) 235 cm 2']

c