Zad.1: oblicz pole i obwód koła, którego promień jest równy: a) 6 cm b) 4,4 dm c) 3/5 m d) 1dm 8cm
a)
b)
c)
d)
a) r=6 cm
L=2π r
L=2π*6
L=12π cm
P=π r²
P=36π cm²
==============================
b) r=4,4 dm
L=2π*4,4=8,8 πdm
P=19,36 π dm²
=====================================
c) r=3/5 m
L=2π*3/5
L=6/5 π m
P=9/25 π m²
=======================================
d) r=1,8 dm
L=2 π*1,8
L=3,6 dm
P=3,24 π dm²
============================================
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a)
b)
c)
d)
a) r=6 cm
L=2π r
L=2π*6
L=12π cm
P=π r²
P=36π cm²
==============================
b) r=4,4 dm
L=2π r
L=2π*4,4=8,8 πdm
P=π r²
P=19,36 π dm²
=====================================
c) r=3/5 m
L=2π r
L=2π*3/5
L=6/5 π m
P=π r²
P=9/25 π m²
=======================================
d) r=1,8 dm
L=2 π*1,8
L=3,6 dm
P=π r²
P=3,24 π dm²
============================================