Louise measured the perimeter of her rectangular scrapbook to be 140 cm. If the scrapbook is 38 cm wide, how long is the scrapbook?
A.
64 cm
B.
32 cm
C.
70 cm
D.
30 cm
C. 70 cm
Perimeter = 2(length + width)
140 = 2(length + 38)
70 = length + 38
70 - 38 = length
32 = length
Therefore, the length of the scrapbook is 32 cm.