Tolong jawab plis besok di koreksi​

K = ½ × π × r

K = ½ × 3,14 × 10

K = 1 × 3,14 × (10 ÷ 2)

K = 1 × 3,14 × 5

K = 3,14 × 5

K = 15,7 cm

jawaban

C. 31,4

penjelasan

K= π × diameter

= 3,14 × 10

= 31,4

semoga membantu