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 length of a rectangle is halved , while its breadth is tripled . watis the % change in area ? 
Options: a ) 43 % , b ) 47 % , c ) 50 % , d ) 65 % , e ) 68 %

A: c
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Q: Problem: find the perimeter of a triangle with sides measuring 7 centimeters , 10 centimeters and 15 centimeters . 
Options: ['a ) 10 cm', 'b ) 15 cm', 'c ) 32 cm', 'd ) 35 cm', 'e ) 20 cm']

A: c
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Q: Problem: the area of square abcd above is 22 . the shaded region is the intersection of the square and a circular region centered at c . what is the area of the shaded region ? 
Options: ['a ) 18 − 9 / 4 ∗ π', 'b ) 22 − 11 / 2 ∗ π', 'c ) 9 + 9 / 4 ∗ π', 'd ) 9 + 9 / 2 ∗ π', 'e ) 9 / 2 − 9 / 4 ∗ π']

A:
b
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