dpeck68 dpeck68

02-09-2015
Mathematics

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The perimeter of a regular pentagon is 41.5 what is the length of all sides

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crisforp crisforp

02-09-2015

A regular pentagon has five lines of reflectional symmetry.
Let be y = the length of one side ;
The perimeter is 5 × y ;
We have 5 × y = 41.5 ;
y = 41.5 ÷ 5 ;
y = 8.3 ;

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