mathbrain1 mathbrain1

20-04-2015
Mathematics

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The perimeter of a rectangular piece of metal is 24 centimeters.it is 4 1/2 centimeters wide.how long is it

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Anjel1521 Anjel1521

20-04-2015

7 3/4 centimeters long. 4 1/2 x 2= 8 1/2 (width of both sides combined) 24 - 8 1/2= 15 1/2 (length of both sides combined) 15 1/2 divided by 2= 7 3/4 (length of one side)

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20-04-2015

P=24(cm)
width= 4 1/2 (cm)
P=(a+b)*2=24
a - width
b - length
4.5+b=24/2=12
b=12-4.5
b=7,5
Well, length is 7.5 cm

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