Final answer:
To make a 16-foot-long pipe using pieces that are 6 feet long (2 * 3 feet), one would need 3 pieces of pipe, as 16 divided by 6 is approximately 2.67, which is rounded up to 3.
Step-by-step explanation:
To determine how many pieces of pipe that are 2 * 3 feet long are needed to make a pipe 16 feet long, we first calculate the length of each individual piece. Since 2 * 3 feet equals 6 feet, each piece of pipe is 6 feet in length.
To find out how many 6-foot sections of pipe it takes to reach 16 feet, divide 16 by 6. 16 divided by 6 is approximately 2.67. Since we cannot have a fraction of a piece of pipe in practical terms, we must round up to ensure that the pipe reaches the full length required. Therefore, you would need 3 pieces of 6-foot pipe to reach a length of at least 16 feet, knowing that the final length will slightly exceed the specified 16 feet.