Question

15.) The radius of circle is 7 cm long. The length-of
its semi-circle is
(a) 14 cm
(b) 20 cm
(c) 21 cm
(d) 22 cm
​

Answer 1

Answer

22

Step-by-step explanation:

radius = 7

circumfrence  = 2PI *R

so, circumfrence of semicircle = 2PIR/2

so, length =  2*22/7*7/2

44/7*7 = 44

44/2 = 22 cm

Answer 2

Answer:

this is my answer

Step-by-step explanation:

please tell me brainlist