a cylindrical tree trunk is 14 yards high from the ground up to the lowest branch, and it measures 4 yards around. what is the volume of wood in this section of the trunk?

A. 224pi yd^3
B. 56/pi yd^3
C. 56pi yd^3
D. 28 yd^3
E. 28pi yd^3

Question

a cylindrical tree trunk is 14 yards high from the ground up to the lowest branch, and it measures 4 yards around. what is the volume of wood in this section of the trunk?

A. 224pi yd^3
B. 56/pi yd^3
C. 56pi yd^3
D. 28 yd^3
E. 28pi yd^3

campbell_st · Answer

use the circumference information to find the radius... 

$$4 = 2\pi r$$

solve for r

then the volume is 

$$V = \pi r^2 h$$

you know h = 14 and found r earlier... just substitute to find the volume of wood

anonymous · Answer

thx men