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a)P=16πcm²
P=πr²
r = √16
r = 4 cm
b)r=√10 cm
c)r= √400
r=20
2
a) r= 4cm
b) r=10 m
c) r= 0,2dm
d) r=1 km
e) 3/4 mm
b) r=√10
c)r=20
2
a)r=4
b)
r=10
c)r=0,2
d)r=1
e)3/4
P=πr²
r = √16
r = 4 cm
b)r=√10 cm
c)r= √400
r=20
a) r= 4cm
b) r=10 m
c) r= 0,2dm
d) r=1 km
e) 3/4 mm