Answer:
60
Step-by-step explanation:
45 divided by 9 is 5. So you multiply 4 times 5. Which equals 20. So 20 plus 45 is 65. Hope you understand it.
The unknown shape could be a rectangle, parallelogram, or kite.
:)
A number rounded to the nearest 10000, means that the last four digits of that number (on the left of the decimal point) are 0.
<span>However, if the fourth-last digit to the left of the decimal point is 5 or greater, the number to the left of that is rounded to 1 number higher. For example, if you were rounding 145293 to the nearest 10000, it would be 150000.
However, the </span>fourth-last digit to the left of the decimal point in this case is 1.
Therefore, <span> 21000 rounded to the nearest 10000 is 20000.
</span>
Answer:

Step-by-step explanation:
we know that
If the tank half-filled with water is at 20 feet, then the height of the tank is 40 feet
The volume of the cylindrical tank is equal to

we have


assume

substitute and solve for r

![r^{2}=6,000/[(3.14)(40)]](https://tex.z-dn.net/?f=r%5E%7B2%7D%3D6%2C000%2F%5B%283.14%29%2840%29%5D)

Find the diameter
Remember that the diameter is two times the radius
