You are putting up a fence using 4-inch diameter wooden fence posts. To secure a fence post properly, it is recommended that it is set in the center of a two-foot deep hole with cement 6 inches
thick surrounding it.
a. Sketch a two dimensional shape with a rotational axis to model the amount of cement needed to
secure one fence post.
b. Use your model to find the volume, to the nearest cubic inch, of cement needed for each fence
post.
C. Cement costs $3.57 per 80 pound bag and each bag makes approximately 1000 cubic inches of