Leslie found the volume of a cone having both a height
and diameter of 12 inches. Her work is shown below.
1. radius = 12 = 6 in.
2. base area = pi6= 36 in.
3. cone volume = 361(12) = 4321 in.
Analyze Leslie's work. Is she correct? If not, what was
her mistake?
-Yes she is correct.
-No, the radius is twice the diameter, so she needed
to multiply by two instead of dividing.
-No, the value of 62 is 6 times 2, or 12.
-No, she forgot to take one-third of the base area times height.
