1. What is the perimeter of a square circumcribing a circle of radius a cm.
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Perimeter of a square =4a cm or 4*side
Radius of a circle =a cm.
So...,
Circumference (Perimeter) of a circle
=2*pie*radius
=2*22/7*a
=44a/7
Perimeter of a square that circumburing a circle =44a/7 -4a
=44a -28a÷7
=16/7 cm..
Hope You like solution..
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