A square has its length and width increased by two feet and four feet respectively so that it is now a rectangle. The perimeter of the new rectangle is eight feet less than twice the original perimeter. What was the original perimeter?

Question

Kyle Hatfield

Mathematics

4 December, 20:19

A square has its length and width increased by two feet and four feet respectively so that it is now a rectangle. The perimeter of the new rectangle is eight feet less than twice the original perimeter. What was the original perimeter?

+4

Answers (2)

Know the Answer?

Oliver Cooley · Answer 1

Answer: 20

Step-by-step explanation:

P=2a+2b=2 (a+b)

a1=a+2

b1=b+4

Pnew=2 (a+2) + 2 (b+4)

Pnew=2a+2b+4+8

Pnew=2 (a+b) + 12

Pnew=2P-8

P+12=2P-8

12+8=2P-P

20=P

Jethro · Answer 2

Jethro 4 December, 20:28

0

I think the correct anwer p=20