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4*(7+5+3)=60cm
1.2
8
1.3
15*4=60
1.4
6*³√64²=96
1.5
5:2=2,5
1.6
4*3=12
1.7
r=8/2=4
P=4πr²=64π
1.8
V=1/3*π5²*6=50π
1.9
β
1.10
P=2π5*8=80π
2.1
a=3,6m
V=6,48m³
V=1/3*a²*h
V=1/3*12,96*h
h=6,48/4,32
h=2m
2.2
P=πr(r+l)
l²=9a²+14a²
l=5a
P=π*3a*(3a+5a)=24a²π
2.3
h²=7²-5²
h=√24
2.4
r=8h
V=πdm³
V=πr²*h
π=π64h³
h=1/4dm
2.6
l=6√2
h=r=6
V=2πr²+2πr*h
V=144π
2.7
r=4*√3/2
r=2√3
P=2*π*r*h=24√3π
2.8
a=10
V=1/3*h*a*a
h²=100-50
h=√50
V=1/3*√50*100
2.9
V=((3+4)*1/2)*200=700
7001,7=1190ton
2.1
10*0,03=0,1kg
2.2
a=v/t
V=120km/h=33,33m/s
a=33,33/20=1,6667m/s²
2.3
33,333m/s=120km/h
120/5=24
2.4
4,8dm³=4800cm³
4800/25=192
2.5
480-100%
14,4-x
x=3%
2.6
1:4000000
2.7
((60+40+70+80+80+70)/6)/60=1,111
2.8
5000/2=2500
2500-50km
x-2km
x=100
1.1
3m³=3000dm³
3000/0,5=6000
1.2
60/40=1,5min
1.3
2,5- 3
60- x
x=72
1.4
(4*2,5)/(5*0,4)=5
1.5
2*10³km
1.6
C
1.7
s=V*t=240cm
1.8
2%*480=9,6
1.9
700m
1.10
4/(16+4)*100%=20%