Geometriya .VIII-sinf.III-chorak test.A-variant
1.Trapetsiya yuzi formulasini toping.
#1 S=a.h #2 S=
#3 S=a.b #4
#5 S= a
2
2. Uchburchak yuzi formulasini toping.
#1 S=a.h #2 S=
#3 S=a.b #4
#5 S= a
2
3. Trapetsiyaning asoslari 24 sm va 18 sm.Balandligi 10 sm bo’lsa uning yuzini toping.
#1 55 sm
2
#2 160 sm
2
#3 85 sm
2
#4 210 sm
2
#5 32,5 sm
2
4. Asoslari 6 va 10 ga teng bo’lgan teng yonli trapetsiyaning diagonallari o’zaro perpendikulyar.Trapetsiyaning yuzini toping.
#1 100 #2 64 #3 144 #4 25 #5 49
5. Trapetsiyaning yuzi 30 ga ,balandligi 6 ga teng bo’lsa, uning o’rta chizig’I qanchaga teng bo’ladi?
#1 15 #2 5 #3 7,5 #4 10 #5 6
6. Trapetsiyaning yuzi 30 ga ,balandligi 4 ga teng bo’lsa, uning o’rta chizig’I qanchaga teng bo’ladi?
#1 15 #2 5 #3 7,5 #4 10 #5 6
7.To’g’ri burchakli uchburchakda a=3 , b= 4 bo’lsa , c ni toping
#1 10 #2 5 #3 15 #4 20 #5 25
8. To’g’ru burchakli uchburchakda a = 1,2 c=1,3 bo’lsa , b katetni toping.
#1 0,5 #2 4
#3 2
#4 4
#5
9. To’g’ru burchakli uchburchakda a = 7 c= 10 bo’lsa , b katetni toping.
#1 0,5 #2 4
#3 2
#4 4
#5
10.Uchta tomoniga ko’ra uchburchak yuzini toping. 15,15,18
#1 288 #2 108 #3 24 #4 60 #5 32
11. Teng tomonli uchburchakning tomoni 3 ga teng, uning yuzini toping.
#1 9
#2 4
#3 25
#4 9
#5 49
12. Teng tomonli uchburchakning tomoni 7 ga teng, uning yuzini toping.
#1 9
#2 4
#3 25 #4 9
#5 49
13. Teng tomonli uchburchakning tomoni 6 ga teng, uning balandligini toping.
#1 9
#2 8
#3 25
#4 18
#5 49
14. To’g’ri burchakli uchburchakning gipotenuzasi 25 sm,katetlari o’zaro 3:4 nisbatda.Shu uchburchakning kichik katetini toping.
#1 10 #2 15 #3 9 #4 12 #5 20
15. To’g’ri burchakli uchburchakning katetlaridan biri 12 sm,ikkinchisi esa gipotenuzadan 8 sm qisqa.Shu uchburchakning
ikkinchi katetini toping.
#1 15 #2 16 #3 13 #4 5 #5 29
16. Katetlari 3 va 4 ga teng bo’lgan to’g’ri burchakli uchburchakning gipotenuzasiga tushirilgan balandligini toping.
#1 2 #2 3 #3 1,4 #4 2,5 #5 2,4
17. Teng tomonli uchburchakning balandligi 7,5 sm.Shu uchburchakka ichki chizilgan aylananing radiusini toping.
#1 3 #2 8 #3 6 #4 2,5 #5 5
18. Katetlari 80 va 60 ga teng bo’lgan to’g’ri burchakli uchburchakka ichki chizilgan aylananing radiusini toping.
#1 10 #2 20 #3 30 #4 40 #5 8
19.To'gri burchakli uchburchak kateti 8 sm, uning gipo'tenuzadagi proeksiyasi esa 6,4 sm. Shu uchburchakning yuzini toping.
20.To'gri burchakli uchburchakning gipotenuzasi 25 ga, katetlaridan biri 10 ga teng. Ikkinchi katetning gipotenuzadagi
proeksiyasini toping.
21. Aylana tashqarisidagi nuqtadan aylanaga ikkita urinma o’tkazilgan.Agar urinmalar orasidagi burchak 56
0
bo’lsa,aylananing
urinish nuqtalari orasidagi katta yoyni toping.
22. Aylanani kesuvchi ikki vatari orasidagi burchaklardan biri 135
0
ga teng.Shu burchakka qo’shni bo’lgan burchaklarning
yig’indisini toping.
23. A,B,C nuqtalar markazi O nuqtada bo’lgan aylanada yotadi. Agar
0
bo’lsa, AOC burchakni toping.
24. Markazi O bo’lgan aylananing AB yoyi 60
0
ga teng. Agar aylananing radiusi 8 sm ga teng bo’lsa, A nuqtadan OB radiusgacha
bo’lgan masofani toping.
25. Tashqi urinuvchi ikki aylana radiuslarining nisbati 4:5 kabi. Aylanalarning markazlari orasidagi masofa 18sm.Kichik
aylananing diametrini toping.
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