Question

More help with cylinder math?

Answer 1

Answer:

$V=706.5$ $ft^3$

Step-by-step explanation:

Since it's saying, "how much water does your neighbor need to completely fill his pool", it's asking for us to find the volume of the pool because the volume is the amount of space inside the pool which will be filled with water.

The volume formula for a cylinder: $V=\pi r^2h$

In the text, since they gave the diameter and not the radius, we need to find the radius by dividing the diameter by two: $\frac{15}{2}=7.5$

Now, we can start solving.

$V=(3.14)(7.5^2)(4)$

$V=(3.14)(56.25)(4)$

$V=(3.14)(225)$

$V=706.5$

Hope this helps

Answer 2

First you will need to find the lateral idea which is
2(15) (3.14) (4)
-multiply them together
Then you will need to find the base.
-3.14x15x4
Then find the surface area
-answer from lateral area and 2(-answer from base-)
Add that and that is ur answer