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August 30, 2014

August 30, 2014

Posted by **John** on Wednesday, August 22, 2012 at 10:29pm.

- Geometry -
**Reiny**, Wednesday, August 22, 2012 at 10:58pmone side --- 4.5

other side ---- x

area = 4.5x

perimeter = 2x + 9

translate " size of a rectangle's area is twice as large as the size of it's perimeter " into

4.5x = 2(2x+9)

4.5x = 4x + 18

.5x = 18

x = 36

the other side is 36

check:

area = 4.5(36) = 162

perimeter = 2(4.5+36) = 81

is 162 twice 81 ??? Sure is !

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