NaNa1135 NaNa1135

13-12-2016
Advanced Placement (AP)

contestada

the perimeter of rectangle is 66 cm and the width is half of its length.What are the length and the width of the rectangle?

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CowboyChemist CowboyChemist

14-12-2016

2W+2L=66
W=1/2L

2(1/2L)+2L=66

Simplifies to L+2L=66
Simplifies to 3L=66
Or L=22.

If W=1/2L, then W =1/2(22).
W=11.

To check our work, 2W+2L=66.
2(11)+2(22)=66.
22+44=66
66=66 Check.

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