Xxii variant

II TOPSHIRIQ
1.

2. 310-120-90=100 kg
3. 24²+7²=x²
x²=625
x=25
7*7=l*25
L=49/25=1.96
4.
10*x=6*6
x=3.6
Javob:3.6
5.
(24k)²+(7k)²=75²
625k²=5625
k²=9
k=3
24k=72
7k=21
Javob:72 va 21
6.
15²+x²=(x+3)²
225=6x+9
6x=216
x=36
x+3=39
Javob:39
7.
12²+x²=(x+4)²
144=8x+16
8x=128
x=16
x+4=20
Javob:20
8.(12k)²+(5k)²=39²
169k²=1521
k²=9
k=3
12k=36
5k=15
Javob:36 va 15
III TOPSHIRIQ
L=12a=96
a=8
S_sirt=6a²=6*8²=384
2.
S_yon=a²=16
a=4
V=a³=4*4*4=64
3.
S_yon=40*15=600
S_asos= 10*10* =25
S_to’la=600+50
4.
S_asos=0.5*15*20=150
h=15*20/25=12
V=150*12=1800
5. Muntazam to‘rtburchakli piramidaning uchidagi tekis burchak shu piramidaning yon qirrasi va asosi orasidagi burchakga teng 60°.
6. 11<a²+2*a*5<24
a²+2*a*5-11<0 a²+2*a*5-24<0
a²+10a-11<0 a²+10a-24<0
(-11;1) (-12;2)
a=(1;2)
7. S_kesim=4
S_{yon sirt}=4п