Arestaurant uses 3 pounds of pasta for a party of 14 people. if they are cooking pasta for a party of 56 people, what should they do?

There are numerous important information's given in the question. Based on the given information's the correct answer to the question can be easily reached.
Amount of pasta used for a party of 14 people = 3 pounds
Amount of Pasta used for a party of 56 people = (3/14) * 56 pounds
                                                                           = 3 * 4 pounds
                                                                           = 12 pounds
So 12 pounds of pasta is required by the restaurant for serving 56 people. I hope this answer is what you were looking for. This is the easiest method for solving such problems. Once you understand the method, you will not need the help of any other person in future.

Find out much is used for one so 3/14 = 0.214285714285714

0.214285714285714 x 56 = 12

12 pounds of pasta

You can check this by doing 12/56 = 0.214285714285714

So its the same.

12 pounds of pasta is your answer.

Its a right angled triangle not a right triangle