if correct please help!!

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie