The diameter of the moon is approximately 3,476 km. What is the volume of the moon to the nearest kilometer? Dont answer me with a link.

Me answer number 3plz explain how you do it

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.