19,2
А С D B
×————×———×—————-×
? 4 3/8 8 1/6
CD=4 3/8 cм
DB=8 1/6 cм
AB=19,2 cм
АС=АВ-СD-DB
AC=19,2-4 3/8-8 1/6=19 1/5-4 3/8-8 1/6=
=(19-4-8)+(24/120-45/120-20/120)=
=7+(-41/120)=6 120/120-41/120=
=6 79/120 cм
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Answers & Comments
19,2
А С D B
×————×———×—————-×
? 4 3/8 8 1/6
CD=4 3/8 cм
DB=8 1/6 cм
AB=19,2 cм
АС=АВ-СD-DB
AC=19,2-4 3/8-8 1/6=19 1/5-4 3/8-8 1/6=
=(19-4-8)+(24/120-45/120-20/120)=
=7+(-41/120)=6 120/120-41/120=
=6 79/120 cм