Mohon bantuannya kk…Maksih ​

Keliling

K = ¼ × 2 × π × r + 2 × r

= ¼ × 2 × 22/7 × 7 + 2 × 7

= ¼ × 2 × 22 + 14

= 11 + 14

= 25 cm

Luas

L = ¼ × π × r²

= ¼ × 22/7 × 7 × 7

= ¼ × 22 × 7

= 38,5 cm²