Question

find the circumference of the following figure.
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Answer 1

Answer:

132cm

Step-by-step explanation:

(b) Radius given = 21 cm

Here the same rule is applied.

= 1/2 x 2nr

= nr ( Again assume Pi as 22/7)

= 22/7 x 21

= 22 x 3 = 66 cm

But as you can see here not only one semi circle is  given , but also another semicircle is given.

So the total circumference will be = 66 + 66 = 132 cm