Perimeter of Semicircle

Last updated at August 14, 2026 by

Let us consider a semicircle ABC

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ย 

Perimeter of semicircle will be the distance around it

Perimeter of Semicircle - Part 2

So,

ย  Perimeter of semicircle = ๐œ‹r + 2 r

ย = r(๐œ‹ + 2)

Let us take an example:

ย 

ย 

Find perimeter of a semicircle with radius ofย  2 cm

Perimeter of Semicircle - Part 3

Radius = r

ย  ย  = 2 cm

ย 

Perimeter of semicircle = r (๐œ‹ + 2)

ย  ย  ย  ย = 2 (3.14 + 2)

ย  ย  ย  ย = 2 (314/100+2)

ย  ย  ย  ย = 2 ((314 +ย  2 ร— 100)/100)

ย  ย  ย  ย = 2 ((314 + 200)/100)

ย  ย  ย  ย = 2 (514/100)

ย  ย  ย  ย = 1028/100ย  = 10.28 cm

ย 

ย 

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