Acompany makes two similar cylindrical containers. the total surface area of the smaller container is 0.81 times that of the larger container. the height of the larger container is 60 cm. what is the height of the smaller container?

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?