The cone shaped cup is made out of paper. How much paper was used to make the cup, excluding the opening at the top of the cup? Write your answer in terms of pi, and round to the nearest tenth. Please help me

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.

Anyone know these questions? i need ,.

Write as a product: ac^2–ad+c^3–cd–bc^2+bd