Let length of rectangle=x and width be y
.`. area=x*y
now new length=x+12x/10=22x/10
width=y-y/5=4y/5
now .....
new area=new length-new width=22x/10*4y/5
new area=88xy/50
Use the Pythagorean Theorem to find the diagonal of the rectangle.
The diagonal of the rectangle is the diameter of the circle.
Diameter (d) = 2 · radius (r)
Circumference (C) = 2· π · r → π · d
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