Answer: Option C.
Step-by-step explanation:
The volume of a sphere can be calculated with this formula:

Where "r" is the radius.
You can observe in the figure that the value of the radius of this sphere is:

Then you can substitute this radius into the formula
.
Therefore, the volume of the sphere shown in the figure is:


If the perimeter of a regular octangulo is 96cm when it measures each side?
<span><span>−1/</span>3</span>m−7=5Add 7 to both sides.<span><span><span><span><span><span><span>−1/</span>3</span></span>m</span>−7</span>+7</span>=<span>5+<span>7</span></span></span><span><span><span>
<span><span>−1/</span>3</span></span>m</span>=12</span>Multiply both sides by 3/(-1).<span><span><span>(<span><span><span>3/<span>−1</span></span></span></span>)</span>*<span>(<span><span><span><span>−1/</span>3</span></span>m</span>)</span></span>=<span><span>(<span><span><span>3/<span>−1</span></span></span></span>)</span>*<span>(12)</span></span></span><span>m=<span>−36</span></span>Answer:<span>m=<span>−36</span></span>