A gold sphere with a diameter of 120 mm is melted and then cast into a right rectangular prism with a base that is 95 mm long and 85 mm wide. To the nearest millimeter, the height of the right rectangular prism is: PLEASE HELP ASAP!

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.