The engine in a car has eight cylinders. each cylinder is a right cylinder with a diameter of 2.765 in. and a height of 4 in. find the total displacement of this engine

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?