Answer:
a
Step-by-step explanation:
Answer:
.
Step-by-step explanation:
Let's say that the radius is r. The base diameter is two times the radius, or 2r.
Since the height is two times the diameter, the height is 2 * 2r = 4r.
The volume of a cone is 1/3 * h * pi * r^2. So, the volume of the cone is 1/3 * 4r * pi * r^2 = 1/3 * pi * 4r^3 = 4/3 * pi * r^3.
So, the volume of the cone is
.
Hope this helps!
The length of a rectangle that forms from a lateral surface of a cylinder is C. 2 Pi rh.
Answer:
4 Minutes. (Approx, to the nearest minute)
Step-by-step explanation:
24.2% of 680 is: 164.56
164.56 * 4(Minutes) = 658.24
164.56 * 5(Minutes) = 822.8
So since it's rounded up, 5 minutes is too long because it would be long gone by then, and the next highest amount of minutes that it can decay for but not reach LESS than 10 grams left, is 4 minutes.