Answer
16/144
If that doesn't work, try simplifying the fraction.
12A + 2 + A - 1 = a + 12a + 1 = 13a + 1
A cross section is a shape formed by cutting an object using a plane. For this case, a cone is sliced parallel to the slant height so the cross section formed would be a plane with a U-like shape. From the image attached, the correct answer is the second option.
#3.) 48 pieces of ribbon
#3.) this week they cost $112
