19. Quyidagi tekis burchaklarning qaysilaridan uch yoqli burchak yasash mumkun.
*a)10о,170о ,90о;
b)130о, 85о , 160о;
c)160о,130о , 80о;
d)150о,120о, , 90о.
20. To`g`riburchakli parallelepipedning uch o`lchoviga ko`ra diago`nalini toping. 12;16;21.
*a)29
b)30
c)25
d)15
21. Asosining tomonlari 29,25,va 6 ga,yon qirrasi asosining katta balahdligiga teng bo`lgan uchburchakli to`g`ri prizmaning hajmini toping.
*a)1200
b)1300
c)1400
d)1250
22. Muntazam to`rtburchakli piramida asosinig tomoni 6, balandligi 4 ga teng bo`lsa, hajmini toping.
*a)48
b)86
c)106
d)76
23. Silindr o`q kesimi kvadrat bo`lib diago`nali 20 sm. Silindr asosinig radiusini toping.
*a)
b )8
c) 10см
d)10
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