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: 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: the length of a rectangular plot is 10 mtr more than its width . the cost of fencing the plot along its perimeter at the rate of rs . 6.5 mtr is rs . 1950 . the perimeter of the plot is ? 
Options: ['a ) 126', 'b ) 156', 'c ) 190', 'd ) 300', 'e ) 260']
d

Problem: if a rectangular billboard has an area of 130 square feet and a perimeter of 46 feet , what is the length of each of the longer sides ? 
Options: a ) 4 , b ) 7 , c ) 8 , d ) 13 , e ) 26

d