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: the diagonals of a rhombus are 13 cm and 20 cm . find its area ? 
Options: a ) 176 , b ) 130 , c ) 150 , d ) 179 , e ) 172

A: b
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Q: Problem: the sides of a triangle are in the ratio 5 : 12 : 13 and its perimeter is 180 m , its area is ? 
Options: a ) 90 , b ) 882 , c ) 277 , d ) 261 , e ) 281

A: a
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Q: Problem: a rectangular block 6 cm by 12 cm by 15 cm is cut up into an exact number of equal cubes . find the least possible number of cubes . 
Options: a ) 30 , b ) 40 , c ) 10 , d ) 20 , e ) 50

A:
b
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