Is the volume of a right circular cone is equal to the volume of a regular square pyramid, which have the same height what is the ratio of the radius of the cone's base to the edge of the pyramid's base?

Asandwich shop has 18 tables. each table seats up to 4 people. to find the greatest number of people that can be seated, you can solve p4 ≤ 18. which step is the best way to solve the inequality? plz asap i repeat plz