tolong ya kak nomer 23 sama cara nya ya kak

keliling
= ( 1/2 × π × 20 ) + 25 + 35 + 20
= 31,4 + 25 + 35 + 20
= 111,4 cm

K = 1/2 lingkaran + 20 + 25 + 35
= 2 × phi × r/2 + 80
= 2 × 3,14 × 10/2 + 80
= 62,8/2 + 80
= 31,4 + 80
= 111,4 cm
Jawaban = C