Mathematics, 09.11.2020 17:00 kenna1323
Find the dimensions of a cylinder of volume 17 m3 of minimal cost if the top and bottom are made of material that costs twice as much as the material for the side.
Answers: 2
![\frac{dT}{dr} =0=\frac{d}{dr} [2k\pi(\frac{17}{\pi r} +2r^2)]\\\\4r-\frac{17}{\pi r^2} =0\\\\4r=\frac{17}{\pi r^2}\\\\r^3=\frac{17}{4\pi }=1.35\\\\r=\sqrt[3]{1.35}\\\\r=1.1\ m\\\\h=\frac{17}{\pi r^2} =\frac{17}{\pi (1.1)^2} \\\\h=4.42\ m](/tpl/images/0880/2260/dd3e8.png)
Another question on Mathematics
Mathematics, 21.06.2019 14:00
What are the critical values that correspond to a 95% confidence level and a sample size of 93? a. 65.647, 118.136 b. 59.196, 128.299 c. 57.143, 106.629 d. 69.196, 113.145
Answers: 3
Mathematics, 22.06.2019 03:00
Linda and ralph have signed a contract to purchase a home. the closing date is april 27, and the buyer owns the property on the day of closing. the selling price of the home is $782,500. linda and ralph obtained a fixed-rate mortgage from a bank for $685,000 at 7.35% interest. the seller has already paid $14,578.15 in property taxes for the coming year. how much will linda and ralph owe in prorated expenses? (3 points) $64,925.65 $34,347.06 $10,496.82 $9,945.06
Answers: 3
Mathematics, 22.06.2019 03:10
47: 4 aisha changed 1.45 + 2.38 to 1.5 + 2.4 in order to estimate the sum. what estimation method did she use?
Answers: 1
Mathematics, 22.06.2019 04:40
Which of the following statements is true? a. sin 18° = cos 72° b. sin 55° = cos 55° с. sin 72° = cos 18° d. bоth a and c.
Answers: 3
You know the right answer?
Find the dimensions of a cylinder of volume 17 m3 of minimal cost if the top and bottom are made of...
Questions
Mathematics, 02.04.2020 03:38
Mathematics, 02.04.2020 03:38
Mathematics, 02.04.2020 03:39
English, 02.04.2020 03:39
Health, 02.04.2020 03:39
Physics, 02.04.2020 03:39
Physics, 02.04.2020 03:39
Mathematics, 02.04.2020 03:40
Mathematics, 02.04.2020 03:40
