w załączniku dałeem zad 1 to tylko te z jednostkami
zad 2 oblicz pole i obwód koła ktorego promien jest rowny
a 6 cm
b 4,4dm
c3/5
d 1dm i 8cm
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zad.2]
pole koła=πr²
obwód=2πr
r=6cm
p=π×6²=36πcm²
ob.=2π×6=12πcm
r=4,4dm
p=π×4,4²=19,36πdm²
ob.=2π×4,4=8,8πdm
r=⅗
p=π(⅗)²=9/25πj.²
ob.=2π×⅗=6/5π=1⅕π
r=1dmi 8cm=18cm
p=π×18²=324πcm²
ob=2π×18=36πcm
zad.1]
1cm²=100mm²1ha=100a
7500cm²=75dm²
0,4dm²=40cm
3km²=300ha
2 000 000m²=2km²
2dm²=200cm²
5ha=500a
400m²=4a
0,03m²=3dm²
421ha=4,21km²
1a=100m²
60a=0,6ha
0,7cm²=70mm²
5,1cm²=510mm²
25000a=250ha
zad. 1
a 100
d 100
g 75
j 40
ł 300
o 2
b 200
e 500
h 4
k 3
m 4.21
c 100
f o.6
i 70
l 510
n 25
2
v=2*pi*r
p=pi*r^2
a v=12*pi
p=36*pi
b v=8,8*pi
p=19,36*pi
c v=6/5*pi
p=9/25*pi
d v=3,6*pi
p= 1 64/1000*pi