Answer:
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.
