Jethro wants a swimming pool in his backyard, so he digs a rectangular hole with dimensions 40 feet

Jethro wants a swimming pool in his backyard, so he digs a rectangular hole with dimensions 40 feet long, 20 feet wide, and 5 feet deep. How many cubic feet of water will the pool hold?

This is a rectangular solid. The volume is l x w x h:
V = 40 x 20 x 5
V = 4,000 cubic feet