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What is the perimeter of this figure?

What is the perimeter of this figure?-example-1

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There are 2 semi circles.

One that is on left side ( say S1)and the other one at the bottom(say S2) of the figure. Both these semi circles have diameter 30.

perimeter of S1 = (2*pi*15)/2

perimeter of S2 = (2*pi*15)/2

There is another figure which is of a semicricle(say S3). The radius is 30.

Perimeter of S3 = (2*pi*30)/4

Required perimeter

= S2+ S3-S1

= [(15*pi)/2] + [(15*pi)]- [(15*pi)/2]

= (15*pi)

= (15*3.14)

= 47.1

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