Tolong dibantu kakak :v pakai cara ya :v smp kelas 8 yang ngasal mandul
ekamiaww
1) d = 50 cm kelilng roda = πd = 3,14 x 50 = 157 cm jarak tempuh = keliling x bnyak putaran = 157 x 1200 = 188.400 cm = 1.884 m
2) luas arsiran = luas setengah lingkaran besar = 1/2 πr² = 1/2 x 22/7 x 14 x 14 = 308 cm²
3a) TB² = 8² + 6² TB² = 64 + 36 TB = √100 TB = 10 cm b) luas limas = luas alas + 4 x luas sisi tegak = (12 x 12) + (4 x 1/2 x 12 x 10) = 144 + 240 = 384 cm²
4) 2 dadu banyak ruang sampel = n(S) = 6² = 36
5a) rusuk sejajar = AB \\ CD \\ EF \\ GH AD \\ BC \\ EH \\ FG AE \\ BF \\ DH \\ CG b) diagonal ruang = AG, HB, EC, FD
Semoga membantu ya :)
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ananekusuma21
4) bnyak anggota ruang sampel 2 dadu = 6.6 = 36
5) a. kelompok rusuk sejajar : AB = DC = EF = HG AD = BC = EH = FG AE = BF = DH = CG
b. diagonal ruang : AG,BH,CE,DF
1) jarak = K lingkaran . putaran = phi.d.1200 = 3,14.50.1200 = 188400 cm = 1884 m atau 1,884 km
2) L 1/2 lingkaran besar = 1/2.phi r² = 1/2.22/7.14² = 308 cm² L 1/2 lingkaran kecil = 1/2.phi.r² = 1/2.22/7.7² = 77 cm²
jadi, L yg diarsir = 308 - 77 + 77 = 308 cm²
3) a. 1/2.sisi = 1/2.12 = 6 cm maka : TB = Akar dr 6²+8² = akar dr 36+64 = √100 = 10 cm
b.Lp limas = L alas + jumlah L sisi tegak = s² + 4.1/2.a.t = 12² + 4.1/2.12.10 = 144 + 240 = 384 cm²
kelilng roda = πd
= 3,14 x 50
= 157 cm
jarak tempuh = keliling x bnyak putaran
= 157 x 1200
= 188.400 cm
= 1.884 m
2) luas arsiran = luas setengah lingkaran besar
= 1/2 πr²
= 1/2 x 22/7 x 14 x 14
= 308 cm²
3a) TB² = 8² + 6²
TB² = 64 + 36
TB = √100
TB = 10 cm
b) luas limas = luas alas + 4 x luas sisi tegak
= (12 x 12) + (4 x 1/2 x 12 x 10)
= 144 + 240
= 384 cm²
4) 2 dadu
banyak ruang sampel = n(S) = 6² = 36
5a) rusuk sejajar = AB \\ CD \\ EF \\ GH
AD \\ BC \\ EH \\ FG
AE \\ BF \\ DH \\ CG
b) diagonal ruang = AG, HB, EC, FD
Semoga membantu ya :)
= 6.6
= 36
5) a. kelompok rusuk sejajar :
AB = DC = EF = HG
AD = BC = EH = FG
AE = BF = DH = CG
b. diagonal ruang :
AG,BH,CE,DF
1) jarak = K lingkaran . putaran
= phi.d.1200
= 3,14.50.1200
= 188400 cm
= 1884 m atau 1,884 km
2) L 1/2 lingkaran besar = 1/2.phi r²
= 1/2.22/7.14²
= 308 cm²
L 1/2 lingkaran kecil = 1/2.phi.r²
= 1/2.22/7.7²
= 77 cm²
jadi, L yg diarsir = 308 - 77 + 77 = 308 cm²
3) a. 1/2.sisi = 1/2.12 = 6 cm
maka :
TB = Akar dr 6²+8²
= akar dr 36+64
= √100
= 10 cm
b.Lp limas = L alas + jumlah L sisi tegak
= s² + 4.1/2.a.t
= 12² + 4.1/2.12.10
= 144 + 240
= 384 cm²