A grain silo is approximately 85% full. A 55 lb sack of grain measures 2 cubic feet.

What is the best estimate of the number of bags of grain that can be filled using all the grain in the silo?
A
1708 bags

B
2010 bags

C
6833 bags

D
8038 bags

Option A . 1708 bags

Step-by-step explanation:

The picture of the question in the attached figure

step 1

Find the volume of the silo

The volume of the silo is equal to the volume of a cylinder plus the volume of a cone

so

we have

---> the radius is half the diameter

substitute

Remember that

The silo is approximately 85% full

so

The volume of grain in the silo is

step 2

Find the number of bags of grain

Divide the volume of grain in the silo by the volume of one sack

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