Step-by-step explanation:
One inequality could be x > 3. So when x = 4 this is true because 4 is greater than 3.
At least means that the number could either equal 6 or be greater than 6.
The inequality would be: n ≥ 6
If the diameter is 8 centimeters, the radius is 4. We can use the formula

and plug in r=4 and h=13 to get

, so

.
V=1/2a*c*h this is to solve the volume of a prism