coba tolong di bantu

Keliling 3/4 lingkaran
3/4 × 2 Π r
3/4 × 2 × 22/7 × 7
3/2 × 22
66/2
33 cm

Jawabannya yang C

Semoga membantu

keliling O
= 2πr
= 2x22/7x7
= 44 cm²

Keliling ¼ O
= ¼2πr
= ¼x2x22/7x7
= 11 cm²
keliling yg diarsir
= keliling O - keliling ⅓ O
= 44 cm² - 11 cm²
= 33 cm²