The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: the ratio of the radius of two circles is 1 : 3 , and then the ratio of their areas is ?
[EX A]: 1 : 9

[EX Q]: 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 . 7 per square feet if there is one door of dimensions 6 feet * 3 feet and three windows of dimensions 4 feet * 3 feet each ?
[EX A]: s . 6342

[EX Q]: Problem: in a garden , 26 trees are planted at equal distances along a yard 700 metres long , one tree being at each end of the yard . what is the distance between two consecutive trees ?
[EX A]:
28