Posted by **Thomas** on Sunday, January 5, 2014 at 11:09pm.

The perimeter of the rectangle is 24 cm, the long side is x + 2, the width side is x , if a new rectangle is created by doubling the lengths of the original rectangle's longest sides, what would the new rectangle's perimeter be ?

a. 17 cm^2

b. 24 cm^2

c. 31 cm^2

d. 38 cm^2

e. 48 cm^2

please answer and explain

- math -
**Reiny**, Sunday, January 5, 2014 at 11:44pm
2(x + x+2) = 24

4x+4=24

4x=20

x=5

the original rectangle is 5 by 7

take it from there

- math -
**Thomas**, Monday, January 6, 2014 at 12:58am
so, doubling the lenghts = 2x+4

14+14+5+5=38

answer d

- math -
**Reiny**, Monday, January 6, 2014 at 11:22am
Read your question more carefully, it said to double the original triangle's LONGEST sides

original longest side = 7

new longest side = 14

new recctangle is 5 by 14

new perimeter = 38

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