Uchburchakning yuzi — 8-sinf Geometriya test savollari

1.Uchburchakning tomonlari 39 cm, 42 cm va 45 cm ga teng. Geron formulasi bo'yicha uning yuzini toping.

• A)756 cm²
• B)630 cm²
• C)810 cm²
• D)693 cm²

2.Uchburchakning ikki tomoni 5 dm va 6 dm, ular orasidagi burchak 30° ga teng. Uchburchakning yuzini toping.

• A)7,5 dm²
• B)15 dm²
• C)30 dm²
• D)3,75 dm²

3.Uchburchakning yuzi 150 cm² ga teng. Uchburchakning balandliklari 15 cm, 12 cm va 20 cm ga teng bo'lsa, uning perimetrini toping.

• A)60 cm
• B)50 cm
• C)75 cm
• D)45 cm

4.Bir uchburchakning asosi 20 cm, balandligi 8 cm. Ikkinchi uchburchakning asosi 40 cm. Ikkala uchburchak tengdosh bo'lishi uchun ikkinchi uchburchakning balandligi qanday bo'lishi kerak?

• A)4 cm
• B)16 cm
• C)8 cm
• D)2 cm

5.ABC uchburchakda AB = 5AC. Uchburchakning B va C uchlaridan tushirilgan balandliklarning (hb : hc) nisbatini toping.

• A)5 : 1
• B)1 : 5
• C)25 : 1
• D)1 : 25

6.Uchburchakning tomonlari 35 cm, 29 cm va 8 cm ga teng. Uning yuzini toping.

• A)84 cm²
• B)72 cm²
• C)96 cm²
• D)108 cm²

7.Uchburchakning tomonlari 20 cm, 20 cm va 32 cm ga teng. Uning yuzini toping.

• A)192 cm²
• B)160 cm²
• C)224 cm²
• D)256 cm²

8.To'g'ri burchakli uchburchakning katetlari 4 cm va 7 cm ga teng. Uning yuzini toping.

• A)14 cm²
• B)22 cm²
• C)28 cm²
• D)11 cm²

9.To'g'ri burchakli uchburchakning katetlari 1,2 dm va 25 cm ga teng. Uning yuzini toping.

• A)150 cm²
• B)37 cm²
• C)300 cm²
• D)75 cm²

10.To'g'ri burchakli uchburchakning katetlari 12 cm va 16 cm ga teng. Gipotenuzaga tushirilgan balandlikni toping.

• A)9,6 cm
• B)12 cm
• C)8 cm
• D)19,2 cm