The answer to this question has to be D. 42.75 square inches.
There will be a 25 grams left after 3240 years.
The half-life of Radium-226 is 1620 years. If we divide 3240 by 1620 the answer is 2. So that means the amount of Radium-226 will divide in half twice.
100 / 2 = 50 / 2 = 25
Answer:
A. annually I believe it's the answer bc you add interest every year that way
Answer:
The answer is the number two answer.
