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= 36 - 25
= 11
= 3,3
l = 2: 6 x 3,3
= 2 : 19,8
=9,9
s = 2 : ( 6 + 5 + 5 )
= 2 : 16
= 8
r = 9,9 : 8
= 1,2
2. l = 2 : 7 x 24
= 2 : 168
=336
r = 7 x 24 x 25 / 4 x 336
= 4200 / 1344
= 3,125
r =
=
= = 1,5 cm
2) s = 1/2(7+24+25) = 1/2×56 = 28
r =
=
=
= 12,5 cm