– . – .
, . – .
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, ( ). . = 75 .
– , 4 . ( – 150 ).
( ), , .
= 2r, =3,14, r – . , r = /2 = 75/2*3.14 = 12 .
() (). .
, .
(, ).
. = √(2 + 2)= √(752 + 752)=106 . 75 – (150/2=75).
, = – = 106 – 75 = 31 .
( ). 1 = 2 = 62 . D = √(12/2) = √(622/2) = 44 .
, :
– = = 150
– = 1/2 =75
– r = = 12
– = 44
– = – r =106 – 12 = 94 150 =75 .
– 2.0 1.5 .
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