47. 12388980384689 would be the exact circumference of a circle witha diameter of 15 inches :)
Answer:
1.25*12=15
Step-by-step explanation:
Answer:
Step-by-step explanation:
- Initial amount = 2112 g
- Time = 188 days
- Half-life = 47 days
188 days / 47 days = 4 periods
<u>Mercury left after 188 days:</u>
- 2112 * (1/2)^4 =
- 2112* 1/16 =
- 2112/16 =
- 132 g
