Question

1-5 задание
С решением

Answer 1

1)
$l=2pi r=2*3,14*2=12,56$

2)
$l=2pi rl=pi d=3,14*2=6,28$

3)
$l=2pi rl=pi d=3,14*5=15,7$

4)
$l=2pi r$
$r=frac{l}{2pi}=frac{6}{2*3}=1$

5)
$S= frac{pi}{d}*d^{2}=frac{3,14}{4}*4^{2}=0,785*16=12,56$