### Home > INT3 > Chapter 9 > Lesson 9.1.5 > Problem9-71

9-71.

Suppose Shau wants to produce a 3‑D printed model of a tree. One cubic centimeter of printing material weighs $7.27$ grams. Shau plans to make a tree $12$ cm tall with a cylindrical trunk and spherical top. The diameter of the treetop is to be $3$ cm. The trunk can support a treetop weighing no more than $80$ grams. Can Shau print out a solid treetop? Why or why not? If not, what do you suggest he do? Explain completely.

To compute the volume of a sphere, use the formula:

$V=\frac{4}{3}\pi r^3$