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officialgraciela67
04.07.2020 •
Mathematics
A cylinder has a base diameter of 5 cm and a height of 8 cm.
The base diameter is increased by 15% and the height is decreased by 30%.
Find the percentage change in the volume of the cylinder.
Type each step of your working on a separate line.
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Ответ:
The new volume is 81.2% of the prior, this is true for any for any values of radius and height, as long as they are changed as stated.
Step-by-step explanation:
The volume of a cylinder is given by:
If we increase the diameter by 15%, then the radius is increased by 7.5% and the new radius is:
If we decrease the height by 30%, then the new height is 70% of the prior and is given by:
Applying to the volume formula we have:
The new volume is 81.2% of the prior, this is true for any for any values of radius and height, as long as they are changed as stated.
Ответ:
12 * 3x
Step-by-step explanation:
x is equal to the minutes