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the width of a rectangle is 2/3 of the length. the perimeter of the rectangle is 15 cm. what is the length,l, of the rectangle. exlplain

Respuesta :

perimeter of a rectangle=2(L+w) 
15=2(L+2/3L)    where w=2/3*L
15=2(5L/3)

L=9/2=4.5 cm

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