george has a candle in the shape of a cylinder. the candle melts at a constant rate. the table below shows the amount of candle, in cubic centimeters, melted off at the given number of hours after burning started. find the percent of the candle that is melted off after 7 hours.
use 3.14 for pi and round your final answer to the nearest percent.
(images attached below)

After 7 hours about 70% of the candle was melted

Step-by-step explanation:

First let's find the volume of the candle and the volume of wax melted off. Then we can divide them to find the percent of the candle that is melted off.

=πr  

2

h

=π⋅4  

2

⋅6

=π⋅16⋅6

=96π             use 3.14 for π

=301.44 cm  

3

Hint #33 / 6

We know the candle is burning at a rate of 30\text{ cm}^330 cm  

3

 per hour because after 22 hours, 60\text{ cm}^360 cm  

3

 of the candle was melted off.

Percent candle melted off

=  

Original volume of candle

Amount candle melted off

=  

301.44 cm  

3

210 cm  

3

≈70%

Hint #66 / 6

After 77 hours about 70% of the candle is melted off.