Awater storage tank is in the shape of a hemisphere (half a sphere). if the radius is 20 ft, approximate the volume of the tank in cubic feet.

The approximate volume of the tank is

Step-by-step explanation:

we know that

The volume of a hemisphere (water storage tank) is equal to

we have

assume

substitute

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

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