tolong d jwab pertanyaan ku tentukan luas dan keliling dari 3/4 lingkaran mks.......tlong yah

L = 3/4.phi.r²
= 3/4.22/7.42²
= 4.158 cm²

k = 3/4.2.phi.r
= 3/4.2.22/7.42
= 198 cm²
semoga membantu :-)