What is the are of a hexagon with a radius of 5 inches?

Simplify the expression 10/11(22z) + (a+5) -1

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?