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: 50 square stone slabs of equal size were needed to cover a floor area of 72 sq . m . find the length of each stone slab ? 
Options: a ) 120 cm , b ) 767 cm , c ) 88 cm , d ) 666 cm , e ) 776 cm
a

Problem: the diagonals of a rhombus are 10 cm and 15 cm . find its area ? 
Options: a ) 75 , b ) 129 , c ) 150 , d ) 123 , e ) 117
a

Problem: what is the perimeter of a rectangular field whose diagonal is 5 m and length is 4 m ? 
Options: a ) 20 m , b ) 15 m , c ) 14 m , d ) 10 m , e ) 25 m

c