The formula for the area of a triangle is A= 1/2 bh, in which b represents the length of the base and h represents the height. If a triangle has an area of 256 mm^ 2 and the height is 16 mm, what is the measure of the base? The measure of the base is mm . Please help me !<3

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.