Answer:
The mass of the pipe is 
Step-by-step explanation:
step 1
Find the volume of the steel pipe
The volume is equal to the area of outside circle minus the area of inside circle, multiplied by the length of the pipe
so
![V=\pi [r2^{2}-r1^{2}]L](https://tex.z-dn.net/?f=V%3D%5Cpi%20%5Br2%5E%7B2%7D-r1%5E%7B2%7D%5DL)
we have
---> the radius is half the diameter
---> the radius is half the diameter
substitute
=59.66\ cm^{3}](https://tex.z-dn.net/?f=V%3D%283.14%29%5B1%5E%7B2%7D-0.9%5E%7B2%7D%5D%28100%29%3D59.66%5C%20cm%5E%7B3%7D)
step 2
Find the mass
The mass is equal to the density multiplied by the volume
so
~Hello There!~
Tom should choose the bank that offers the highest interest rate because that would mean he makes more money.
Hope This Helps You!
Good Luck :)
Have A Great Day ^_^
- Hannah ❤
Answer: 28.08%
Step-by-step explanation: To find the percent increase, we divide the amount of change by the original number.
The amount of change is the difference between the two numbers which in this case is 561,000 - 438,000 and the original number is 438,000.
561,000 - 438,000 is 123,000 so we are left with 123,000 divided by 438,000 which is 0<em>.</em>2808. Finally, since our problem is asking us for a percent, we write 0<em>.</em>2808 as a percent by moving the decimal point two places to the right to get 28.08%.
So when the population changes from 438,000 to 561,000, it has increased by 28.08%.
Answer:
£56
Step-by-step explanation:
you first have to find out how much one kg is so you do 42/3=14
then times is by 4, 14x4=56
Answer: 
Step-by-step explanation:
Knowing that Mrs. Huynh bought a bag of 3 dozen toy animals. The total number of animals in the bag is:
The cost of the bag was $28.97, so you must divide 36 by $28.97 in order to know the price of each toy animal.
To estimate this quotient, the first round the numbers so that they are easier to work with.
We can say that:
Then:
Therefore, you can estimate that the price of each toy animal is:
