The cylindrical storage shed shown below is completely filled with road salt to make a town's roads safer during snow storms. About 21,000 cubic feet of road salt is used during a typical snow storm.
a. What is the total volume of the storage shed?
b. How many snow storms can the town expect to handle before the storage shed needs to be refilled with additional road salt?
![The cylindrical storage shed shown below is completely filled with road salt to make a towns roads safer during snow storms About 21000 cubic feet of road salt class=](https://us-static.z-dn.net/files/d52/63c517ba2dffc2f08e31e6e6ee8d7cb2.png)