Tolong sertakan caranya ya 10-11

10. K yg diarsir = 14 + 7 + 7 + (22/7.14.¼)
28 + 11 = 39 m
11. pnjng busur = 60/360 . 22/7.84 = 44 cm

10.
rumus :
panjang busur
= sudutpusat/360 x phi x keliling
= 90/360 x 22/7 x 14
= 1/4 x 44
= 11 m

Keliling
= 14 + 7 + 7 + 11
= 39 m
jawaban : c

11.
Panjang busur
= AOB/360 x kel. lingkaran
= 60/360 x 22/7 x 2 x 42
= 1/6 x 264
= 44 cm

jawaban : d