4πr2
= 4×π×42
= 64π
= 201.06192982975 inches2
The answer should be the last one
Since there are 21 questions and one is extra credit, the fraction is 21/20. Divide it to get 1.05. In percent, this is 105%. Hope this helps!
Slope: 
<u>Use the slope formula</u>
<u>Note</u>
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Scientific notation is just rewritten so that it has a single digit in front of the decimal and that this is multiplied by a power of ten that makes this decimal equal to the original number.
In this case we have 2.67 million. Well a million is equal to 10^6, because 10*10*10*10*10*10=one million.
So in scientific notation you would write:
2.67X10^6
The answer is B
R=89.49/2 pi
It give you the circumference and you need to find the radius
