Can someone help me I don’t quite understand ILL GIVE to whoever is right

What is the exact volume of the cylinder 1.5 m 2.5 m

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers