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 length and breadth of a rectangle is increased by 3 % and 6 % respectively . what is the increase in the area ?
Options: a ) 9.18 , b ) 9.25 , c ) 9.5 , d ) 8.98 , e ) 8.88
a

Problem: the radius of a cone is 10 m , height 21 m . the volume of the cone is :
Options: ['a ) 2200', 'b ) 1100', 'c ) 5500', 'd ) 3300', 'e ) 1050']
a

Problem: find the circumference and area of radius 11 cm .
Options: a ) 124 cm , b ) 144 cm , c ) 380 cm , d ) 284 cm , e ) 394 cm
c