Question

3 of 12 The perimeter of a rectangular piece of cardboard is 7 feet, and the area is 3 square feet. The length and width of this piece are each multiplied by 6. What is the perimeter of the new enlarged piece of cardboard?

A. 34 ft.
B. 42 ft.
C. 54 ft.
D. 68 ft.​

Answer 1

B. 42 ft.

Explanation:

2L+2W=7

LW=3

L=3/W

2(3/W)+2W=7

6/W+2W=7

6+3W=7W

6=4W

W=3/2

L=2

12(2)+12(3/2)=42

Answer 2

B is the correct answer