In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Problem: the dimensions of a room are 25 feet * 15 feet * 12 feet . what is the cost of white washing the four walls of the room at rs . 9 per square feet if there is one door of dimensions 6 feet * 3 feet and three windows of dimensions 4 feet * 3 feet each ? 
Options: a ) 4000 , b ) 345 , c ) 5673 , d ) 6530 , e ) 8154
e

Problem: if the height of a cone is increased by 140 % then its volume is increased by ? 
Options: ['a ) 100', 'b ) 140', 'c ) 998', 'd ) 729', 'e ) 2879']
b

Problem: find the area of a parallelogram with base 25 cm and height 15 cm ? 
Options: a ) 295 cm 2 , b ) 385 cm 2 , c ) 275 cm 2 , d ) 375 cm 2 , e ) 285 cm 2

d