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Find the diameter of a circle with circumference of 15.70
Solution: We are given:
The circumference of a circle 
We are required to find the diameter of the circle based on given circumference.
We know that:

rounded to two decimal places
Therefore, the diameter of the circle with circumference 15.70 is 5
To find 20% of 119.50 you multiply 119.50 by 20% in decimal form
Then you subtract the discount (d) from the total to get your new price (n)
119.5*.2=d
23.9=d
119.5-d=n
119.5-23.9=95.6
So the new price is <u><em>$95.60</em></u>