Lontongin dunk secepat nya:v☻☻​

Keliling 1/2 Lingkaran : 1/2 × πd

=> 1/2 × 3,14 × 24

=> 3,14 × 12

=> 75,36 cm

Keliling : Keliling 1/2 Lingkaran + 2 Sisi Segitiga

=> 75,36 + 2 ( 13 )

=> 75,36 + 26

=> 101,36 cm