instruction:
In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
question:
Problem: a and b are two circles . the radius of a is four times as large as the diameter of b . what is the ratio between the areas of the circles ? 
Options: ['a ) 1 : 8 .', 'b ) 1 : 2 .', 'c ) 1 : 24 .', 'd ) 1 : 64 .', 'e ) 1 : 6 .']
answer:
d


question:
Problem: find the smallest number that must be added to 1780 to make it a perfect square . 
Options: a ) 17 , b ) 42 , c ) 69 , d ) 47 , e ) 52
answer:
c


question:
Problem: the radius of a cylinder is 8 m , height 14 m . the volume of the cylinder is : 
Options: a ) 2816 , b ) 5500 , c ) 3300 , d ) 1100 , e ) 4400
answer:

a