SOLUTION: When sawdust is poured into a pile, it takes the shape of a cone where the proportion of height to base diameter is always the same. The volume of a cone can be found using the for

Algebra ->  Volume -> SOLUTION: When sawdust is poured into a pile, it takes the shape of a cone where the proportion of height to base diameter is always the same. The volume of a cone can be found using the for      Log On


   



Question 1156126: When sawdust is poured into a pile, it takes the shape of a cone where the proportion of height to base diameter is always the same. The volume of a cone can be found using the formula
V=1/3πr^2h, where r
is the radius of the base circle, and h
is the height of the cone.
A particular sawdust pile has a base diameter of 35 feet when the height is 30 feet. Find the volume of this sawdust pile when it is 45 feet high.

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
V=1/3πr^2h, where r
is the radius of the base circle, and h
is the height of the cone.
A particular sawdust pile has a base diameter of 35 feet when the height is 30 feet. Find the volume of this sawdust pile when it is 45 feet high.
V=1/3πr^2h
V=(1/3)*π (17.5)^2 * 30
V =9621.12
9621.127 = (1/3)*π * r^2 * 45
r^2 = 9621.127*3/ ( pi * 45)
r^2 =204.16
r= 14.29 ft