Jawab yg benar pliss​

Penjelasan dengan langkah-langkah:

A.) k = 628 cm

2πr = 628

2 x 3,14 x r = 628

6,28 x r = 628

r = 628 : 6,28

r = 100 cm

B.) k = 50 cm

2πr = 50 cm

2 x 3,14 x r = 50

6,28 x r = 50

r = 50 : 6,28

r = 7,95

C.) k = 132 cm

2πr = 132

2 x 22/7 x r = 132

44 x r = 924

r = 21 cm