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lub 0,1256
d) 2r = 2,2
r= 1,1
1,21pi
lub 3,7994
r=8
64pi
lub 200.96
a) 8 + 2 = 10
r= 10
100pi
lub 314
b) 8 * 2 = 16
r= 16
256pi
lub 803,84
d) srednica= 2,2m to r= 1,1m
P= 3,14*1,21= 3,7999
f) O= 3/4 pi
2 pi r = 3/4 pi
2r= 3/4
r= 3/8=0,375
P= 3,14* 0,141= 0,44
a)r1=8
P1= pi* 64= 64pi
r2=8+2=10
P2= pi*100= 100pi
P2-P1= 100-64=36
b)
r1=8
P1= pi* 64= 64pi
r2=8*2=16
P2=pi*256=256pi
P2-P1=256pi-64pi= 192 pi