Question

find the circumference of a semicircular shape on a line of length 10 cm .​

Answer 1

Here it is given that a semicircle is drawn on a 10 cm line

So, the radius of the semicircle will be 5 cm

Now, we have to find the circumference of the semicircle

Circumference of semicircle = πr + 2r

                                              = r ( π + 2)

                                             = 5 ( 3.14 + 2 )

                                             = 5 ( 5.14 )

                                              = 25.7 cm

Hence, the circumference of the semicircle will be 25.7