Find the area of a circle with a diameter of 6.
Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answer as a decimal.

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of