Answer:
Step-by-step explanation:
The formula of a volume of a cylinder:
The formula of a volume of a cone:
The volume of a cone is equal the volume of a cylinder.
Therefore we have the equation:
<em>divide both sides by πh</em>
<em>multiply both sides by 3</em>
Answer:
-4.85714285714
Step-by-step explanation:
Answer:
33 minutes
Step-by-step explanation:
We know that the initial amount of money on the card is $15 and that she had $12.03 after the call. We can subtract 12.03 from 15 to find out how much the call cost.
15 - 12.03 = 2.97
Now that we know the cost of the call is $2.97, we can divide it by the amount it cost per minute (9 cents) for Susan to make an international call:
First, convert $2.97 to cents:
$2 is the same as 200 cents.
200 + 97 = 297
Now, take 297 and divide it by 9:
297/9 = 33
The call lasted 33 minutes.
