A is 7 4 and 3..B is the same...This is my first time with this kind of problem....
Answer:
Step-by-step explanation:
<u>Formula for circumference of a circle is</u>:
Circumference = 
<em>Given circumference of the ring is 
</em>
<em>Now solving for the radius gives us:</em>
We know that area of a circle is 
, substituting the value of r we found, we get the area as:
area (A) = 
Hence the Area (A), in terms of 
is 
Answer:
3643
Step-by-step explanation:
Answer: the school paid $80 for the book.
Step-by-step explanation:
Let x represent the amount that the school paid for the book.
Her school charges a lost book fee equal to 75% of the cost of the book. It means that the amount that the school would charge on a book that cost $x is
75/100 × x = 0.75 × x = 0.75x
Sarah received a notice stating that she owed the school $60 for he lost book. It means that
0.75x = 60
x = 60/0.75
x = $80
I can't exactly understand what you mean but what I thought you put in the answer is 40
