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

Q: Problem: if the sides of a cube are in the ratio 4 : 3 . what is the ratio of their diagonals ? 
Options: a ) 4 : 3 , b ) 4 : 8 , c ) 4 : 1 , d ) 4 : 2 , e ) 4 : 7

A: a
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Q: Problem: what is the max number of rectangular boxes , each measuring 4 inches by 6 inches by 10 inches , that can be packed into a rectangular packing box measuring 16 inches by 18 inches by 30 inches , if all boxes are aligned in the same direction ? 
Options: ['a ) 36', 'b ) 14', 'c ) 12', 'd ) 15', 'e ) 11']

A: a
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Q: Problem: the area of sector of a circle whose radius is 12 metro and whose angle at the center is 40 ° is ? 
Options: a ) 53 m 2 , b ) 51 m 2 , c ) 50.2 m 2 , d ) 45 m 2 , e ) 40 m 2

A:
c
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