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: a rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered . if the area of the field is 800 sq . ft , how many feet of fencing will be required ? 
Options: a ) 100 feet , b ) 120 feet , c ) 150 feet , d ) 180 feet , e ) 186 feet

A: a
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Q: Problem: the length of rectangle is thrice its breadth and its perimeter is 72 m , find the area of the rectangle ? 
Options: a ) 432 , b ) 212 , c ) 243 , d ) 992 , e ) 212

A: c
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Q: Problem: the area of a circle is increased by 800 % . by what percent has the diameter of the circle increased ? 
Options: a ) 100 % , b ) 200 % , c ) 300 % , d ) 600 % , e ) 800 %

A:
e
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