Q. Fill in the Blank.
1) ----- is the distance around a closed figure.
2) The distance around a circular region is called it's -----.
3) 1 acre= ----- m sq.
4) The area of a circular ring with outer and inner radii r1 and r2, respectively,is -----

Pls ans fast....needed urgently

1) Perimeter.
2) Circumference 
3) 4046.86 m2
4) Annulus

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Experts pls ans....... I have my exam.
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please ask questions a week before exam
 
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