Question

Draw the graph of the equation represented by a strait line parallel to x axis and at a distance 3 units below it.

Answer 1

we know that
2 (l+b)= perimeter of circle
2 (40+26cm)
132cm
now
perimeter of the rectangle = circumference of circle
132cm= 2×22/7×r
132×7/2×22=r
21=r

Answer 2

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Any straight line parallel to x−axis is given by y=k, where k is the distance of the line from x−axis. Here k=−3, because it is below x axis then the equation of the line is y=−3.