A building casts a shadow in the shape of a right triangle with a base 18 feet wide and a height of 20 feet. What is the total area of
the shadow?
38 square feet
90 square feet
180 square feet
360 square feet

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.