(20n+3)
n = number of hours = 1
(20(1)+3) = 23
$23
The answer is D. <span>The volume of the sphere is approximately the same as the cube, but the cube has a greater surface area.</span>
The arcs
all equal to the third of the perimeter since equilateral triangle divides them like this.
So we need to find a perimeter but we are only given the area.
Let's review,

That means that from area we area able to calculate radius.

Insert the numbers,

Then use the perimeter formula to calculate perimeter since radius is known,

Now divide perimeter by 3 to get length of AB arc.

Hope this helps.