let length of the rectangle be l
length is 6 cm longer than the width, w
l = w + 6
perimeter of rectangle is 72 cm
= 2l + 2w
substitute l = w + 6
2(w+6) + 2w = 72
4w + 12 = 72
4w = 60
x = 15
ans is C. 15 cm
Answer:
Step-by-step explanation:
Perimeter = 2 x (length + width)
72 = 2 x ( l + w)
Because l = w +6
72 = 2 x (w + 6 + w)
= 2 x (2w + 6)
= 4w + 12
4w = 60
w = 15 cm
The answer is C.
