Perimetrlari teng bo’lgan romb va kvadratning yuzalari nisbati : ga teng

1. 
   Perimetrlari teng bo’lgan romb va kvadratning yuzalari nisbati 1:2 ga teng. Romb kichik diaganalining kvadrat diaganaliga nisbatini toping
   A) B) C) D)
   
2. 
   Rombning o’tkir burchagi 45 , balandligi ga teng bo’lsa, rombning yuzini toping.
   A) 4 B) 5 C) 4 D) 10
   
3. 
   Rombning perimetri 104 ga, diaganallarining yig’indisi 68 ga teng. Robning yuzini toping
   A) 480 B) 360 C) 120 D) 540
   
4. 
   Rombning uchidan tushirilgan balandligi uning tomonini o’tkir burchagi uchidan boshlab hisoblaganda 6 va 4 ga teng kesmalarga bo’ladi. Rombning yuzini toping
   A) 20 B) 40 C) 48 D) 80
   
5. 
   Diaganallaridan biri ikkinchisidan uch marta katta bo’lgan rombning tomoni 20 ga teng. Shu rombning yuzini toping
   A) 120 B) 240 C) 400 D) 320
   
6. 
   ABCD tomoni 14 ga teng bo’lgan romb. Shu rombning A o’tmas burchagidan AH balandlik tushirilgan va CH=6 bo’lsa, AH balandlik va AC diagonal orasidagi burchak tangensini toping
   A) B) C)
   
7. 
   ABCD rombning diaganallari O nuqtada kesishadi. O OK kesma o’tkazildi. Agar COK uchburchakning yuzi S bo’lsa, rombning yuzini toping.
   A) 4S B) 8S C) 12S D) 16S
   
8. 
   Rasmdagi eng kichik aylananing radiusi r ga teng bo’lsa, to’g’ri to’rtburchak yuzini toping
   A) 24
   

C) D) 24

9. 
   Tomoni 6 sm li ABCD kvadratining ichiga o’tkir burchagi 60 bo’lgan AECF romb ichki chizilgan ( A va C uchlari umumiy va ular 60 dan ). Romb yuzasini toping
   A) 24 B) 18 C) 12 D) 9
   
10. 
    ABCD rombning DC tomoni o’rtasidan E nuqta olindi va BE kesma o’tkazildi. ABED to’rtburchakning yuzasi 48 ga teng bo’lsa, romb yuzasini toping
    A) 80 B) 72 C) 56 D) 64
    
11. 
    Rombning katta diaganaliga parallel to’g’ri chiziq uning yuzini 1:5 nisbatta ajratadi. Bu kesma rombning tomonini o’tmas burchakdan boshlab qanday nisbatda ajratgan?
    A) 1: B) 1: C) 1: ( -1) D)
    
12. 
    Balandliklari 12 va 10 o’tkir burchagi 30 ga teng bo’lgan rombning yuzini toping.
    A) 240 B) 120 C) 240 D) 60
    
13. 
    Rombning tomoni 5 ga diaganallaridan biri 8 ga teng. Rombning yuzini toping
    A) 30 B) 22 C) 24 D) 20