Plissss bantu jawab no.16, 17, 18

16.)
L = 314 cm"

314 = 314/100 . r"
314 . 100/314 = r"
V100 = r
10 cm = r

K = phi . d
K = 314/100 . 20 cm
K = 62,8 cm

Busur = 45/360 . K
Busur = 1/8 . 628/10
Busur = 7,28 cm (gk ada di pilihannya)

17.)
L = 3/4 . phi . r"
L = 3/4 . 314/100 . 10"
L = 3/4 . 314/100 . 100
L = 235,5 cm"

18.)
Diagonal bidang = V7" + 7"
Diagonal bidang = 7 V7

Diagonal ruang = VDb" + s"
Diagonal ruang = V(7 V7)" + 7"
Diagonal ruang = 7 V3 cm

Simpelnya :
Sisi = 7 cm
Diagonal bidang = 7 V2 cm
Diagonal ruang = 7 V3 cm

Semoga membantu dan semoga bermanfaat...