Question

Find the perimeter of a half circle whose diameter is 14 cm.

Answer 1

Answer:

circumference of half circle=1/2*2πr

=22/7*14/2

=22*1

=22cm

Answer 2

Radius =  d/2 = 14/2 = 7

Perimeter of semicircle = r(pi + 2)

[Where r represents the radius]

So,

--> r(2 + pi )

= 7(2 + 22/7)

= 14 + 22×7/7

= 14+ 22= 36cm.

                               

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