Tolong kerjakan ini beserta caranya ya.....please.....aku kasih poin banyak tuh....itu di soal udah ada yg di silang tapi itu salah......semuanya oke jgn setengah setengah klo ngerjain
5dregensleyernomer 13 kliling = 2 x π x r = 2 x 3,14 x 20 = 125,6 ( jawabn B)
nomer 14 kO = π x d = 22/7 x 49 = 154 k = 154 + 2(150) = 154 + 300 = 454 (jawaban C)
kliling = 2 x π x r
= 2 x 3,14 x 20
= 125,6 ( jawabn B)
nomer 14
kO = π x d
= 22/7 x 49
= 154
k = 154 + 2(150)
= 154 + 300
= 454 (jawaban C)
nomer 15
BOC = 2 x 55
= 110
COD = 180-110
= 70
nomer 16
SPR = 180 - 38 - 144
= 28
nomer 17
ABE = 147 : 3
= 47
ade + ace = 49 + 49
= 98
nomer 18
POR = 2 x 60
= 120
busur = 120/360 x 2 x π x r
= 1/3 x 2 x 22/7 x 14
= 1/3 x 2 x 22 x 2
= 29,33
= 3,14 x 40
= 125,6
14. 1 putaran = 2(panjang p.pjg) + keliling 1 lingkaran
= 2 (150) + π . 49
= 300 + 22/7 (49)
= 300 +154
= 454
4 putaran = 4 (454)
= 1816 m --> (D)
15.COB (SP) = 2 SK
= 2 ( 55°)
= 110°
COD = 180 - 110
= 70° (c)
16. SPR = 180 - ( 114 + 38)
= 180 - 152
= 28°
17. ABE = 147 : 3
= 49°
ACE + ADE = 2 (49)
= 98°
18. POR = 2 ( 60)
= 120°
2 x Ljuring = r . busur
2 x 120/360 x 22/7 x r . r = r busur
2 1/3 x 22/7 x r = busur
2/3 x 22/7 x 14 cm = busur
29,33 cm = busur