Answer:
7.7 square feet
Step-by-step explanation:
38.5 divided by 5, equals 7.7.
Hope this helps
Answer:
0.0001075
Step-by-step explanation:
The relation between halflife and rate at which it is decaying is given by

now in the above problem halflife is given as 2800 years substituting in the above equation we get the value of rate at which it is decaying to be rate=0.0001075.
Well the term would be +8. for 3, 11
Then +14.
finally +20
hope that helped
The answer is 23° hope it help!