Answer:
35 square inches
Step-by-step explanation:
The formula is bh
b being base and h being height. In this, the width is height and length is base.
5 times 7 is 35
Mark me as brainliest if this helps!
Answer:
C
Step-by-step explanation:
In the attached file
If 
is the amount of strontium-90 present in the area in year 
, and it decays at a rate of 2.5% per year, then
Let 
be the starting amount immediately after the nuclear reactor explodes. Then
or simply
So that after 50 years, the amount of strontium-90 that remains is approximately
or about 28% of the original amount.
We can confirm this another way; recall the exponential decay formula,
where is measured in years. We're told that 2.5% of the starting amount 
decays after 1 year, so that
Then after 50 years, we have
The radius of a circle is a=pi r^2.
so 360.9=3.14r^2, so that's around 114.94=r^2
r=10.72
Answer:
the answer will stay the same
