The cone shown has a radius of 5 inches and a slant height of 8 inches. rounded to the nearest whole number, what is the total surface area? use 3.14

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