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March 31, 2015

March 31, 2015

Posted by **Mona** on Sunday, July 24, 2011 at 9:33pm.

- Math -
**Reiny**, Sunday, July 24, 2011 at 9:49pmoriginal:

2L+ 2W = 46

L+W = 23

new one:

2(L+12) + 2(2W) = 82

2L + 24 + 4W = 82

L + 2W = 29

Subtract the 1st from the 2nd

W = 6

back in the 1st ---> L=17

**original rectangle is 17 by 6**

check: perimeter of original = 34 + 12 = 46

new rectangle is 29 by 12

perimeter of new = 2(29) + 2(12) = 82

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