jurnee77
20.09.2021 •
Mathematics
Erica makes flags and each one costs $15 to make. She sells one flag for $21. Calculate the percentage profit she makes.
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Ответ:
$21 - $15
. × 100%
$15
$6
___. ×. 100%
$15
= 40%
Ответ:
The area of a circle is:
Radius is equal to one half of the diameter
So the radius of the mirror is 6 inches
Now you can just plug this into the equation: 6 squared is 36, times pi