Exact Surface Area = 378pi
Approximate Surface Area = 1186.92
The approximate surface area uses pi = 3.14
The units are cm^2 or "square cm".
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Work Shown:
SA = surface area of cylinder
SA = 2*pi*r^2 + 2*pi*r*h
SA = 2*pi*7^2 + 2*pi*7*20
SA = 2*pi*49 + 2*pi*140
SA = 2*49*pi + 2*140*pi
SA = 98pi + 280pi
SA = 378pi ..... exact surface area
SA = 378*3.14
SA = 1186.92 ..... approximate surface area
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Side note: The diameter 14 cuts in half to get the radius r = 7
This means you should do 240*3/8 which is 90. so 90 times 240=21600
the answer is 216000km^2
Answer:
1.875 commercials a minute
Step-by-step explanation:
9514 1404 393
Answer:
- 100 mL of 75% solution
- 150 mL of pure alcohol
Step-by-step explanation:
Let x represent the quantity (in mL) of pure alcohol needed for the mix. Then the amount of 75% needed is (250-x). The amount of alcohol in the mixture is ...
1.00x +0.75(250 -x) = 0.90(250)
0.25x +187.5 = 225 . . simplify
0.25x = 37.5 . . . . . . . . subtract 187.5
x = 150 . . . . . . . . . . . . . divide by 0.25
(250 -x) = 100 . . . . mL of 75% solution
You need 100 mL of the 75% solution and 150 mL of pure alcohol to obtain the desired mixture.
Answer:
14
Step-by-step explanation:
Because the median is the middle number when the data set is in order least to greatest so you already have it in least to greatest so thank you for helping me.
and for extra just in case.
Mean=16.222
the mean= the average of the data set
Mode is 13,14
The mode is the number that appears the most in a data set and 13 and 14 appear twice.
Your range is=13
Range is the highest number subtracting the lowest number so 24 -11 which =13
Minimum is 11 because the minimum is the lowest number in data set..
Maximum is 24
Maximum is the highest number in the data set.
I hope this helps have a awesome day:)
