What is the circumference of the circle if r = 3.5 feet? use 22 7 for π. a) 5.5 feet b) 11 feet c) 22 feet d) 38.5 feet

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint